kairyo-yu (改良湯)
Bathhouse · Tokyo · Japan
a small shibuya neighbourhood sento with a sauna and cold plunge that ranks sixth in all of japan by want-to-go votes, and is tattoo-friendly.


what they run
- heat
- Dry / Finnish
- cold
- Cold plunge
- access
- Walk in
- booking
- walk-in
- who
- mixed
- what to wear
- varies
sources
- sauna-ikitai.com national rankingchecked 2026-10-11
- Time Out Tokyo, tattoo-friendly onsen and sentochecked 2026-10-11
also in tokyo
- daikokuyu¥900
- kotobukiyu¥950
- minami-aoyama shimizuyu¥1180
- raku spa 1010 kanda¥1290
- sauna & hotel karumaru ikebukuro¥1980
- spa laqua¥2500