Yamaidashi Ikoi no Sato Onsen
山出(やまいだし)憩いの里温泉やまで(やまいだし)いこいのさとおんせん
Day Use
YesClosed on Wednesdays, except when Wednesday falls on a public holiday, when it stays open. Last entry for bathing is 8:30pm, 30 minutes before the 9pm close.
Adult admission is 650 yen. Discounted rates apply for seniors 65 and up (500 yen), disability handbook holders (450 yen), junior high school students (400 yen), and elementary school age and under (300 yen). 11-visit ticket books are also sold: 6,500 yen for adults, 5,000 yen for seniors, and 4,500 yen for disability handbook holders.
Bathing & Water
Uses natural hot spring water
Open-air outdoor bath
Reviewer confirms indoor-only bathing; the official site's facility list also names only two indoor 大浴場 (惠湯・有卦湯) with no rotenburo mentioned. A Jalan listing at the same address/phone claimed a rotenburo, but its facility text described unrelated spring names not matching this site and was treated as unreliable.
Enclosed indoor bathing area
Capabilities
Private bath available for day-use visitors or hotel guests to reserve
Priced at ¥1,850 (approx. 50 min) on the site's fee table. One May-2026 Google review reported the family bath was unavailable at the time of their visit ('家族風呂があると聞いていましたが、今は利用できません'); kept the official listing since only one recent review conflicts and the site still lists/prices it, flagged as a gap for confirmation.
Shared bathing area for all genders
The two baths swap gender by weekday/weekend rather than being mixed; 有卦湯 rotates the opposite way.
Policies & Services
Allows entry with visible tattoos
Unverified
Restaurant or dining open to visitors (not just hotel meal plans)
Shower, wash stations, soap and shampoo provided
Towels available to rent or borrow
Face towels are sold at reception, not rented; no rental (レンタル/貸出) service found in any source.
Relaxation space for after bathing
On-site or nearby parking available
Views
RiverAbout
Yamaidashi Ikoi no Sato Onsen is a municipal day-use bathhouse and multi-purpose facility set along the Sozu River (僧都川) in Ainan, surrounded by greenery. Bathing is indoor only, split across two separate halls that swap between men's and women's use depending on the day of the week rather than being mixed. The water is a faintly alkaline mineral spring, smooth on the skin and without a strong smell. Two small family baths with rock-lined tubs, Sato-no-yu (里の湯) and Mori-no-yu (森の湯), can also be booked for private use. The wider site doubles as a campground and log-cabin retreat under the pines, with a large tatami hall for resting or group stays. The restaurant, Yukatei, runs a Saturday all-you-can-eat buffet of local Ainan produce; on weekdays meals are by reservation only.
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Last updated August 5, 2026