Shirokawa, Seiyo, Ehime Prefecture
Quaterme Hosenbo
A natural cold-spring facility with a regular bath and a separate warm-water balneotherapy pool. The pool has separate hours and a higher admission price; the two products should not be conflated.
Check before bathing
- Opening hours
- Hot-spring baths 10:00–21:00; last admission 20:00. Closed Tuesdays. Bath admission: adults ¥700, children ¥500, seniors and guests with disabilities ¥600. The separate spring-water balneotherapy pool runs 12:00–20:00 on weekdays and 10:00–20:00 on weekends and public holidays; adult admission ¥1,600. A maintenance closure ran June 23–30, 2026; that date range has passed.
- Tattoo policy
- The current profile does not confirm a tattoo policy; ask the facility before visiting.
Spring & water temperature
- Spring-source temperature
- Not published.
- Bathing temperature
- Not published.
- Spring source
- Hosenbo Onsen.
- Spring classification
- Low-tonicity, weakly alkaline cold mineral spring.
- pH
- Not published.
- Flow rate
- Not published.
- Water handling
- The regular indoor and outdoor baths use Hosenbo spring water, and the facility separately identifies its balneotherapy pool as using spring water. Current official pages do not publish complete water-addition, heating, circulation, disinfection or source-flow details by pool.
Older February 2026 material shows lower prices of ¥600 for the bath and ¥1,500 for the pool. Current operator and tourism listings give ¥700 and ¥1,600. The June maintenance closure was temporary and is over.
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.
