Day Use
YesBathing & Water
Heated tap water, not a natural hot spring
Open-air outdoor bath
Enclosed indoor bathing area
Dry heat sauna room
Cold water plunge bath, typically used after sauna
Capabilities
Private onsen bath in guest rooms, for overnight guests only
Shared bathing area for all genders
Policies & Services
Allows entry with visible tattoos
Welcomes children and families
Under-3s may not enter the tub; children may only share the bath with the opposite-sex parent up to preschool age.
Shower, wash stations, soap and shampoo provided
Towels available to rent or borrow
Relaxation space for after bathing
On-site or nearby parking available
Hotel parking is paid (¥500/night, capped at ¥1,500 for consecutive nights).
About
Hama no Yu is the indoor bath and sauna inside Rizzan Sea-Park Hotel Tancha Bay on the Okinawa coast. There's a single indoor tub, a sauna, and a cold plunge, plus a small rest area with draft beer. The water isn't drawn from a natural spring, so this is a hotel bathhouse rather than a true onsen. The bath is currently for hotel guests only; walk-in day visitors are no longer admitted.
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Last updated August 5, 2026