Kogenyu
高源ゆ
Sauna and onsen recovery spot in the Zao highlands
Day Use
YesWinter season hours differ (daily, with a maintenance and cleaning break in the middle of the day). Closed Thursday mornings and all day on the third Thursday; if that falls on a holiday it is open and the closure moves to the next weekday. Fully reservation-only from July 18 to August 31. The pool is not available from January to March.
The onsen-only plan is 800 yen for adults (junior high and up), 400 yen for elementary school children, free for preschoolers. The 2-hour sauna plan with onsen is 1,600 yen and needs a reservation. Bath towel rental is 200 yen.
Bathing & Water
Uses natural hot spring water
Sauna room of any kind
Cold water plunge bath, typically used after sauna
Bathing Arrangements
Shared bathing area for all genders
Policies & Services
Allows entry with visible tattoos
Tattoos are accepted, but guests who behave in a disorderly way may be asked to leave.
Welcomes children and families
No age limit, but children 12 and under need a guardian in the sauna, and the pool requires a height of 130 cm.
A restaurant or dining room open to visitors, not only meals for overnight guests
Shower, wash stations, soap and shampoo provided
Towels to rent or borrow at the desk
Relaxation space for after bathing
About
Kogenyu is a compact recovery complex in the Zao Bodaira Athlete Village, run as a bathhouse, sauna and cafe in one. Day visitors can take just the onsen bath, which uses clear water, or add the sauna, which is small, fits about six, and allows self-loyly. The cold plunge is next to it, and the outdoor-air deck is walled in but gets a breeze and birdsong from the trees. Men and women change separately, and shampoo and body soap are provided. The building also has a pool and a studio. Afterwards the cafe serves hand-drip coffee, house-made syrup drinks and Pakistani home-style curry. It opened in July 2020.
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Last updated October 11, 2026