Santoka Bath at Kawatana Grand Hotel Otafuku

Spring-source temperature

Not published

Bathing temperature

Fixed bath temperature not published

Spring source

Kawatana Onsen; the individual spring name is not published on current main official pages

Spring classification

Sodium–calcium chloride spring, mildly alkaline

pH

8.2 (hotel's official onsen page)

Flow rate

Not published

Water handling

The Santoka indoor and open-air baths use natural hot-spring water. The hotel does not publish a complete treatment list for each bath, so do not assume all baths are flow-through.

Santoka day use: adults ¥950 on weekdays, ¥1,150 on weekends and public holidays, and ¥1,450 on special dates. 8:00 a.m.–11:00 p.m.; last entry 10:00 p.m. Basic washing amenities are provided; towels are sold and bath towels can be rented. From April 1, 2026, the ¥1,320 bath-and-facility voucher costs ¥1,800 on weekdays, ¥2,000 on weekends/public holidays and ¥2,200 on special dates.

Special-date rates apply during periods such as Golden Week, Obon and year-end/New Year. Tattoo entry is prohibited. The hotel shuttle is described for overnight guests; day-use eligibility is not confirmed.