Kannawa, Beppu, Oita
Oniishi-no-Yu
A convenient stop beside Oniishibozu Jigoku, with indoor, outdoor and second-floor panoramic baths plus five private family baths. The public bath accepts tattoos; private baths are walk-in only and cannot be reserved.
Check before bathing
- Opening hours
- 10:00–22:00; last admission 21:30 for the public bath and 21:00 for family baths. Public admission ¥620. Private baths cost ¥2,000 or ¥3,300 depending on the room; reservations are not accepted.
- Tattoo policy
- Accepted in the public bath according to Beppu's official tourism page checked June 30, 2026; follow any temporary on-site rule.
Spring & water temperature
- Spring-source temperature
- 93.0°C in a 2021 analysis.
- Bathing temperature
- Not published.
- Spring source
- Oniishi-no-Yu source; the current public pages do not confirm a specific source name.
- Spring classification
- Sodium-chloride spring.
- pH
- Not published.
- Flow rate
- Not published.
- Water handling
- Natural spring water is used in the indoor, outdoor and panoramic baths and five family baths. The current facility and city tourism pages do not publish pool-by-pool supply or treatment details, so flow-through or circulation is not inferred.
93.0°C is a source-analysis temperature, not bath temperature. The private bath's open-air status is not confirmed for every room.
How to read a bath profile
Spring-source temperature and actual bathing temperature are kept separate. Each score is shown independently for comparison rather than collapsed into one overall score.
