Maenocho, Itabashi, Tokyo
Maenohara Onsen Sayanoyudokoro
Best suited to a slower half-day: a garden, dining and rest areas sit alongside a natural spring bath. The source-fed pool is the one to choose if spring water matters; other pools use different water and treatment systems.
Facility photos
Check before bathing
- Opening hours
- 09:00–24:00; last admission 23:00. Closed on announced inspection days. Adults ¥970 on weekdays and ¥1,300 on weekends and public holidays. Busy dates may use holiday pricing; stays over five hours may incur ¥100 per additional hour. The rock bath costs ¥760 extra.
- Access
- About an 8-minute walk from Shimura-sakaue Station, Exit A2, on the Toei Mita Line. No shuttle bus is provided.
- Tattoo policy
- Small tattoos are accepted when covered with up to two of the facility's designated paid cover patches.
Spring & water temperature
- Spring-source temperature
- 32.7°C.
- Bathing temperature
- Not published.
- Spring source
- Itabashi Maenohara Onsen.
- Spring classification
- Iodine-bearing sodium chloride spring; strongly saline.
- pH
- 7.4, measured on site.
- Flow rate
- 27 L/min.
- Water handling
- The source-fed pool is heated but receives no added water or disinfectant. Other outdoor pools use added water, circulation, filtration and chlorine disinfection; the indoor carbonated bath uses well water.
- Analysis date
- 2025-03-24
Bathing indications
The facility lists sensitivity to cold, peripheral circulation issues and dry skin among bathing indications; these are not personal medical claims.
Source analysis sampled on 2025-03-24. Pool water conditions differ; do not apply the source-fed pool's treatment details to every bath.
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.
