Notice of Pool Opening in 2026
Friday, July 10 to Sunday, September 6, 2026 (tentative)
This open-air pool uses natural radon spring water and was renovated in 2022, surrounded by the greenery of Arima.
Please enjoy activities suited to your condition, such as sunbathing, Onsen bathing, exercise bathing, and water walking.
*Please refrain from moving around inside the building in swimwear only. Be sure to wear a cover-up when coming to and from the pool.
Pool size: 25 m (length) × 15 m (width) × 1.2 m (depth).
Children may not use the pool on their own; please enter with an accompanying adult.
The entrance/exit is located in front of the elevator on the 3rd floor of the West Wing.
[For guests staying at our Accommodation] *If you wish to use the pool, please inform the front desk at check-in.
Free hours: On your stay date 14:00–17:00 / Next morning 9:00–10:30
Paid hours: On your stay date 11:30–14:00 / Next day 10:30–17:00
Fees:
11:30–14:00 Adults ¥1,100 / Children (ages 2 through elementary school grade 6) ¥550
Next day 10:30–17:00 Adults ¥2,200 / Children (ages 2 through elementary school grade 6) ¥1,100
*Please complete check-out by 11:00.
Please change clothes in your guest room or in the changing area of the large public bath.
*The large public bath is unavailable from 10:00 to 11:30 due to cleaning.
[For Day-Use Plan guests]
Hours of use:11:30~17:00
Fee:Adults ¥2,200 / Children (ages 2 through elementary school grade6) ¥1,100
Please change clothes in the changing area of the large public bath.
[Regarding infectious disease and heatstroke measures]
• A drink corner is available inside as a heatstroke prevention measure. Please use it regularly.
*Operations may be suspended due to severe weather (heavy rain, lightning, strong winds, etc.).
*No rental swimsuits or float rings are available; please bring your own.
*Guests with tattoos are kindly requested not to use this facility.



















