The water used is groundwater, and the water is boiled with firewood, so it feels good on the skin. There is also a sauna. See the link for details.

[Business hours] 15: 00-23: 00

[Saturday and Sunday morning bath] 8: 00-12: 00

[Medicinal bath]  Wednesdays, Fridays and Sundays

[Bathing fee]

Adult : 430yen

Junior high school student : 280yen

Elementary school student : 180yen

Younger than Elementary school student : Free

Free sauna

[Free service] Body soap, rinse-in shampoo, towels for rent, cotton swabs, lotion, milky lotion, hair dryer, mobile charger, bicycle pump

[Luxury set] 200 yen

https://tokyosento.com/kawaguchi_kirakuyu/

*International mail is also OK at the post office shown in the photo.

Go left on the street in front of Lawson(opposite direction to the station) to the bottom of the pedestrian bridge.