Located in the convenient Kojiya area of Ota-ku, Tokyo, “Sachi no Yu” is a spot for a day trip, offering hot spring sento (public bathhouse with extra amenities) experiences at the price of a local public bath. It’s a popular facility, consistently ranked high on onsen review sites
“Conveniently located right by Kojiya Station. It feels like a local bathhouse, but with a proper onsen feel!”
“Unbelievable that you can enjoy this onsen for 550 yen. The cost performance is amazing.”
“I could relax in the open-air bath. It’s a hidden gem in a residential area.”
“There aren’t many bathtubs, but each one is carefully made and feels great.”
“The facility is a bit old, but it’s clean and I can relax without worries.”
“It’s the best to be able to enter a genuine onsen at a public bath price!”
“The smell of Chinese food reaching the open-air bath is a charming quirk (laughs). It’s part of the experience.”
“The quality of the hot spring is just great. My skin feels smooth.”
“It gets a bit crowded on weekends, but weekdays are less busy and a good time to go.”
“It’s not a super sento, but the quality is close, and I’m very satisfied.”
Pricing:
Adults (12 years and over):
Weekdays 550 yen
Holidays 550 yen
Children :
Weekdays 200 yen
Holidays 200 yen
Note: Prices are subject to change.
Review of my Visit
By Train: Approximately a 5-minute walk from Kojiya Station on the Keikyu Airport Line. It’s just one stop from Keikyu Kamata, making access from Shinagawa and Yokohama areas very convenient.
By Car: There are several free parking spaces. There are also many coin parking lots in the surrounding residential area, making it accessible by car. However, be aware that the parking lot tends to fill up on weekends (also, the roads are actually quite narrow, so it’s better to aim for a parking space).
Relaxing/Extraordinary Atmosphere: 2 points (out of 5)
“Sachi no Yu Onsen” is a rare facility that allows you to enjoy natural hot springs while retaining the calm, slightly Showa-era atmosphere of a neighborhood bathhouse. It consistently ranks high in Jordan’s onsen rankings, making it a popular choice.
However, compared to luxury super sentos or resort onsens, the “non-everyday feel” is inevitably more subdued. I was hoping for a sense of escape in the open-air bath, but instead of the scent of the onsen, the aroma of stir-fried dishes from the adjacent Chinese restaurant wafted over. (In a way, I thought that was interesting in itself.)
Quality of the Hot Spring: 2.5 points (out of 5)
The greatest charm of “Sachi no Yu Onsen” is that you can enjoy authentic natural hot springs at the price of a local public bath.
About the Spring Quality of Sachi no Yu:
Spring Quality: Sodium-bicarbonate/chloride cold mineral spring
Color: Pale brownish transparent
Efficacy: Neuralgia, muscle pain, poor circulation, fatigue recovery, etc.
Various Baths Experiences: 3 points (out of 5)
Even compared to other popular super sento-style onsens in Tokyo such as Goyu-yu, Tenjin-yu, and Shimizu-yu, “Sachi no Yu Onsen” doesn’t lose out in terms of bath variety.
Indoor Baths: One spacious bathtub, electric bath, jet bath
Open-Air Bath: Slightly small but uses natural hot spring water
Cold Bath: Temperature set optimally for after sauna
Sauna: Dry sauna available (no extra charge)
Despite its compact size, each bath is well-thought-out, providing a high level of satisfaction even for a short visit.
Facility : 2 points (out of 5)
The building itself has a sense of age and doesn’t have the luxury of newer super sentos. However, it is well-maintained, and you can tell that the locals use it with care.
Food: 1 points (out of 5)
No food available
Total: 2.25 points (out of 5)
For some reason, “Sachi no Yu Onsen” ranks high alongside other large facilities. The reason for this is probably that it perfectly meets the needs of people in the urban residential area of Ota-ku who think, “I just want to casually enjoy a nice bath for 550 yen!”
Recommended For:
Those living in the vicinity of Kojiya Station (the next station from Keikyu Kamata) in Ota-ku.
Those looking for an easily accessible day trip onsen by car.
Those who want to enjoy a luxurious bath for just 550 yen!
People who like the Showa era atmosphere.
Those who want to explore a hidden gem that is a regular in Tokyo onsen rankings.
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