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[Special] Ota City is a Hot Spring Town with More Public Bathhouses than Any Other Ward in Tokyo!

 

Ota City boasts more public bathhouses than any other ward in Tokyo.

Public bathhouses are loved by everyone not just for relaxation but also as a place where the local community can interact.

In this Special, we will cover these charming public bathhouses.

 

First, we spoke with Mr. Chikashi Kobayashi, the director general of the Ota City Sento Association and the owner of Kaisei-yu, one of the oldest operating public bathhouses in Ota City, about public bathhouses in Ota City.

 

* Please note that the information regarding the establishments in the article may change without notice. Make sure to check for up-to-date information before you visit.

 

 

“The Ota City Sento Association is working to revitalize the public bathhouse industry under the term ‘Sento Special Zone.’

Most of the remaining public bathhouses in Ota City opened for business during and after the war. I am the fourth generation owner of Kaisei-yu. The first generation started the bathhouse in Ota City in 1929. The heyday of the business was from 1955 to 1965. Since there were many factories in the area, there were close to 100 public bathhouses in Kamata alone.

These days, the number of public bathhouses is decreasing not only in Tokyo but in Japan as a whole. Even still, Ota City has more public bathhouses than any other ward in Tokyo.”

 

— Why is it that there are still many public bathhouses remaining in Ota City?

“In addition to being a place of relaxation for the elderly, there are still some houses in the area that do not have baths, and there are so many public bathhouses that use hot springs that people call it ‘Ota City hot spring town.’ Also, there is a demand for leisure facilities. Rather than just saying there’s a need for bathhouses as leisure facilities, we’re trying to create a need for that, and this is something we have been focusing on in recent years.”

 

— What are you focusing on, specifically?

“These days, many children are not familiar with public bathhouses, which is why we offer free admission to elementary school students and younger on the first Sunday of each month, as well as holding events like picture-story shows about public bathhouses at nursery schools.

We have been holding collaboration events together with the sento association of a neighboring city, Kawasaki, since 2013. We are holding a stamp rally event starting this December (2021) with the cooperation of Keikyu Corporation, hoping to receive some good attention from that. We hope that this will be a good opportunity for people who are not that familiar with public bathhouses to come and visit.”

 

 

— So, you’re creating an image of a bathhouse as a fun place through initiatives like that then?

“Exactly. We would like to continue trying to differentiate public bathhouses in Ota City from bathhouses anywhere else, putting them a step or two ahead of the rest of the wards in Tokyo, or even the rest of Japan, and to be the leading city of the public bathhouse industry. It is, for sure, rare to find such a large number of public hot spring facilities in the Tokyo metropolitan area, and there is no doubt that the public bathhouse scene in Ota City is strong and vibrant. It would be great if we could infuse this vitality into the public bathhouse industry nationwide.”

 

— What do you think makes it so strong and vibrant?

“I think it’s because the city itself is lively. Ota City also boasts more shopping districts than any other ward in Tokyo. In that sense, I really feel firsthand that the residents lead a fulfilling life rooted in their local community. Public bathhouses are definitely a part of that.

There are not many businesses where the customers thank you from the bottom of their hearts, saying, ‘Thank you. The baths felt very good.’ I would like to continue doing my best to make everyone even happier.”

 

Thanks to Mr. Kobayashi, we were able to learn a lot about public bathhouses in Ota City.

 

The light brown or blackish brown “kuroyu” hot springs occur in many places around the waterfront areas including Ota City and have been used in public bathhouses in Ota City since ancient times.

Let’s take a look at a few specific places to see what kind of public bathhouses we have.

 

A long-established public bathhouse which introduced kuroyu carbonated springs ahead of other public bathhouses
Kaisei-yu

Kaisei-yu



Kaisei-yu, operated by its fourth generation owner, Mr. Chikashi Kobayashi whom we spoke to earlier, is a public bathhouse loved by the local community for a long time. You can enjoy five kinds of baths here: kuroyu carbonated spring, kuroyu hot spring, a cold bath using water from the kuroyu hot spring, silky bath (shiroyu), and a jet massage bath.



Kuroyu carbonated spring is Kaisei-yu’s pride and joy, which they introduced ahead of other public bathhouses. Kuroyu hot springs contain sodium bicarbonate, i.e., baking soda, and are also referred to as the “bath for beautiful skin,” which is said to cleanse and smooth the skin. Since carbonation improves blood circulation, this is combined with the kuroyu hot spring to warm the body, and the water temperature is set slightly tepid (about 39.0-39.5 ℃) for the effect.


Top left: Kuroyu carbonated spring / Top right: Kuroyu hot spring / Bottom left: Silky bath (shiroyu) / Bottom right: Space for dyeing hair (* Please refrain from using the baths when using hair dye.)
Other than the three kuroyu hot spring baths, Kaisei-yu also has a silky shiroyu (white colored warm water) bath that creates fine bubbles to remove the dirt from pores and soothes the skin, and a jet massage bath, allowing you to enjoy diverse baths. At the corner of the washing area, they even have a hair dyeing space. This service was started as a response to feedback from users. You can see the thoughtfulness that goes into operating a community-focused public bathhouse.

There is a fish tank set into the wall of the bath, and you can watch goldfish and carp coolly swimming in the water. Murals are a big part of public bathhouses. Kaisei-yu uses mosaic tiles for you to enjoy a slightly different mural than what you might see in other public bathhouses. With a bright and open changing room with near-ceiling windows, and a front desk where you can buy various goods, there are plenty of ways to relax and enjoy yourself.


A fish tank is installed into the wall of the bath, and the mural is constructed with mosaic tiles.



A bright and warm wooden changing room with sunlight shining in through windows close to the ceiling



Front desk



Regarding measures related to COVID-19, Kaisei-yu requires the staff and customers to wear masks, has installed a hand sanitizer dispenser at various places including the entrance and front desk as well as ozone generators in the changing rooms. The customers are also required to have their temperature checked at the front desk. Furthermore, the staff disinfects inside the facility regularly.


On the left in the photo is Mr. Naoya Maikawa, lead attendant. He loves public bathhouses so much that he calls himself a bath producer and promotes the goodness of public bathhouses and hot springs every day via SNS. Right in the photo is Mr. Yuuki Inoue, attendant.
“Soaking in a bath helps to lower blood pressure and relax the body, which in turn helps to keep the mind positive, so please come to our bathhouse to experience a feeling of healing. You will feel refreshed and clean, not only physically but mentally as well.” (Mr. Naoya Maikawa, lead attendant)

Kaisei-yu
Address:
5-10-5 Nishikamata, Ota-ku
Tel:
03-3731-7078
Hours of Operation (Currently operating on limited hours):
3:00p.m. - 11:30p.m.
Closures:
Fridays

Feel like you are on vacation, even on a normal day
Hasunuma Onsen

Hasunuma Onsen



After a major renovation at the end of 2017, Hasunuma Onsen was transformed into a “public bathhouse where you can feel like you are on vacation, even on a normal day” based on the concept of Taisho romanticism, which has earned Hasunuma Onsen a lot of attention.
Hasunuma Onsen draws its hot spring from a deeper source than the other kuroyu hot spring facilities in the area, which gives the kuroyu water here a beautiful pale brown color.



Hasunuma Onsen’s kuroyu hot spring is so pale and transparent that you can see the tiles at the bottom of the bathtub.
All three of their kuroyu baths come from the same spring. The cold water bath uses the flow directly from the source as the kuroyu starts out at around 22 ℃.

Left: Kuroyu hot spring / Middle: Kuroyu carbonated spring / Right: Cold water bath with kuroyu flowing directly from the source


Left: Men’s section. The picture is of the Sengataki Waterfall in the Shosenkyo Gorge, Yamanashi Prefecture
Right: Women’s section. The picture is of the Ryuzunotaki Waterfall in Nikko, Tochigi Prefecture


Hasunuma Onsen was designed by Kentaro Imai, a hot spring architect, based on the concept of Taisho romanticism. It features a slightly distinctive, modern layout. The baths are placed in the center, and the washing area surrounds them. The basic layout of the men’s and women’s sections is the same, but the details of pictorial patterns, including the murals, are different.

Men’s sectionWomen’s section

The painted wooden panels above the washing area are the works of a mural artist who also does public bath murals. The pictures represent the four seasons, and the pictorial patterns are all different between the men’s and women’s sections.


The wooden panels painted by a mural artist have the theme of the four seasons, and the patterns are all different.


The wall around the men’s and women’s changing rooms is decorated with stained glass near the ceiling to let the natural light in, creating a very bright and spacious impression. The front desk area is also stylish and relaxing, full of Taisho romanticism with wood, plaster walls, and stained glass windows.



The wall around the changing rooms is decorated with stained glass near the ceiling to let the light in.


The changing room is bright and open.


The front desk area gives the healing Taisho romanticism vibe.


On the floor below your feet swims a carp in 3D.

After working as an office worker for about 15 years, Mr. Yoshimasa Kondo took over as the fourth generation owner. On his days off, he visits public bathhouses in Tokyo and studies them.
“It's been about 60 years since Hasunuma Onsen was established here in Hasunuma, and I took over in April 2020. The current design of the bathhouse is what my predecessor aimed for, and it has resulted in a considerable increase in the number of first-timers, because they can easily enjoy feeling like they are traveling. I hope that we can be a gateway to public bathhouses so that those who have never been to a public bathhouse before can feel comfortable to enter.” (Mr. Kondo, fourth generation owner)



Regarding measures related to COVID-19, Hasunuma Onsen requires the staff and customers to wear masks, has installed a hand sanitizer dispenser at various places including the entrance and front desk as well as ozone generators in the front desk area and changing rooms. The customers are also required to have their temperature checked at the front desk. Furthermore, Hasunuma Onsen limits the number of customers bathing together and manages the number by using tags.
Additionally, busy hours are posted at the front desk to encourage customers to cooperate, and the facility is regularly disinfected by the staff as well.

Hasunuma Onsen
Address:
6-16-11 Nishikamata, Ota-ku
Tel:
03-3734-0081
Hours of Operation:
3:00p.m. - Midnight
Closures:
Tuesdays

Various distinctive baths are combined with an emphasis on cleanliness
Kugahara-yu

Kugahara-yu



Kugahara-yu is a well-established public bath that has been in business for over 70 years and is currently operated by the third generation owner. The clientele has changed over the past 10 years, with the number of young singles and families increasing. In order to meet the needs of this changing clientele, Kugahara-yu has a wide variety of baths and two types of saunas. 10 years ago, Kugahara-yu was renovated with the help of a subsidy from Ota City’s first health promotion and bathhouse renovation program, and it is now barrier-free.
There are two sections in Kugahara-yu, Tsuki-no-yu and Taiyo-no-yu. These sections alternate between the men’s and women’s sections and are switched every two weeks on the second and fourth Wednesdays of each month.


At the time of our visit, Tsuki-no-yu was the men’s section and Taiyo-no-yu was the women’s section.



The types of baths are pretty much the same for both Tsuki-no-yu and Taiyo-no-yu. The kuroyu hot spring is heated directly from the source with no added water, and is available in hot and lukewarm versions. There is also a cold water bath with kuroyu flowing directly from the source, a shiroyu bath, a carbonated spring bath, a regular cold water bath, and a footbath.

[Tsuki-no-yu]
・ Kuroyu hot spring baths

Top left: Kuroyu hot spring (hot) / Bottom left: Kuroyu hot spring (lukewarm) / Right photo: Cold water bath with kuroyu flowing directly from the source into an octopus trap-style tub for one person
・ Other baths

Top left: Highly concentrated carbonated spring / Top right: Shiroyu (jet bath, jacuzzi) / Bottom left: Cold water bath / Bottom right: Footbath
[Taiyo-no-yu]

The main feature of Taiyo-no-yu is a bath with tepid kuroyu hot spring water. It sits in a cave-like space that is independent of the main bath area, and you can enjoy the natural hot spring in a relaxed atmosphere.
As the number of families has increased, Kugahara-yu has been ensuring the temperature of their baths is lukewarm (37.5-38.5 ℃) for the past 10 years, excluding the “hot” kuroyu baths.
The one person cold water bath with kuroyu flowing directly from the source is popular due to the sauna trend.

Left: Dry sauna / Right: Himalayan rock salt piled up in the room


One of the major features of Kugahara-yu is its saunas. There are two types of saunas, a steam sauna (free of charge) and a dry sauna using far infrared (fees apply), in both Tsuki-no-yu and Taiyo-no-yu. The dry sauna, in particular, is expected to increase metabolism and relieve fatigue due to the far infrared, and the use of Himalayan rock salt releases various minerals and ions that help prevent cell oxidation.

Left: Squeaky clean changing room / Right: Areas where people gather, such as the front desk, are carefully cleaned and disinfected.
Kugahara-yu’s motto is to “always be cleaning and keep everything spotless.” Because public bathhouses are locations that experience a lot of visitors, Kugahara-yu makes sure to start and end with cleaning.


Regarding measures related to COVID-19, Kugahara-yu requires the staff and customers to wear masks, has installed a hand sanitizer dispenser at various places including the entrance and front desk as well as sodium hypochlorite generators in the changing rooms. The customers are also required to have their temperature checked at the front desk. Furthermore, they disinfect on a regular schedule and, depending on the situation, disinfect areas that are frequently touched by customers. Thorough cleaning is also done before opening and after closing the bathhouse.


Ms. Yamagishi, owner


Public bathhouses are a part of daily life for the customers. Kugahara-yu continues to pay attention to detail in order for customers to enjoy the facility with peace of mind, and we were able to see that that is what leads to their commitment to cleanliness.

Kugahara-yu
Address:
2-14-15 Kugahara, Ota-ku
Tel:
03-3754-4452
Hours of Operation:
Weekdays: 2p.m. - Midnight
Saturdays, Sundays, national holidays: Noon - Midnight
(The front desk closes at 11:30p.m. on both weekdays and weekends.)
Closures:
Mondays (If a national holiday falls on a Monday, the following day will be closed.)

A leisure oriented public bathhouse where you can even have food
Kamata Onsen

Kamata Onsen



Kamata Onsen has been offering public baths since 1937. What sets aside Kamata Onsen from other public bathhouses is that it has a leisure oriented style. It has a large hall where you can relax after your bath and enjoy a meal. Kamata Onsen implemented this style in 1986 with the goal of “allowing customers to enjoy the kuroyu hot spring for a whole day.”
The kuroyu hot spring that Kamata Onsen uses is close to the sea, so the concentration of minerals is on the high side.



There are two baths, a hot bath (background) and a lukewarm bath (foreground), both of which use heated kuroyu directly from the source without adding additional water, so that customers can enjoy the richness of the water as-is.



If you put a hand in, it’s easy to see how rich it is as you will not be able to see your fingers at around 4-5 cm in depth.
In addition to the kuroyu hot spring baths, Kamata Onsen has various baths.


Bath shown at right: Jacuzzi / Bath shown at left: Electric bath through radium hot spring stone
There is also a cold water bath and sauna.


In the case of Kamata Onsen, the murals are not located on the wall of the bath and are above the entrance instead so that you can look at it while soaking in the warm water. The changing rooms are designed to be relaxing, clean, and have plenty of space.

Left: Tokyo Ota Salted Fried Noodle is made with 10 ingredients deeply related to Ota City. / Right: Live music and other events are held in the large hall.
Kamata Onsen is also famous for its food. Tokyo Ota Salted Fried Noodle is a popular menu item that uses a lot of ingredients associated with Ota City. Kamameshi, Japanese rice pilaf cooked in an iron pot, is also another popular menu item.
The large hall, which is always open to the public as a place to take a break or have a meal, has the feel of an authentic onsen ryokan (hot spring inn), giving you a bit of a travel experience.

Kamata Onsen T-shirt: From 1,200 yen / Original wash cloth: 550 yen


Original goods are also available. In particular, a T-shirt with the Kamata Onsen logo printed on it became popular when a famous actress wore it, and sales have increased many times over. In addition, hoodies and reusable shopping bags are also available.


Regarding measures related to COVID-19, Kamata Onsen requires the staff and customers to wear masks, has installed a hand sanitizer dispenser at various places including the entrance and front desk. Customers are also required to have their temperature checked at the front desk. The facility is disinfected as needed.



“We would like to continue making this bathhouse a place of relaxation for the local community. We are proud of our food, and we have a large space where customers can relax. A whole family can enjoy Kamata Onsen, so please come and relax.” (Mr. Yoshiyuki Shima, fourth generation owner)

Kamata Onsen
Address:
2-32-2 Kamata-honcho, Ota-ku
Tel:
03-3732-1126
Hours of Operation:
10:00a.m. - 0:30a.m.
Closures:
Open every day of the year
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