横川温泉 中野屋旅館よこかわおんせん なかのやりょかん
Two-century-old ryokan with a self-flowing sulfur spring in the Satomi hills
Day-use bath 600 yen. Towel for purchase 150 yen, bath towel rental 200 yen extra. Ganbanyoku add-on +600 yen (incl. yukata).
Uses natural hot spring water
Enclosed indoor bathing area
Sauna room of any kind
Ganbanyoku / low-temperature sauna using tourmaline stone floor. +600 yen (yukata included).
A private bath you can reserve for yourself or your group
Shared bathing area for all genders
Allows entry with visible tattoos
A restaurant or dining room open to visitors, not only meals for overnight guests
Shower, wash stations, soap and shampoo provided
Towels to rent or borrow at the desk
On-site or nearby parking available
Yokogawa Onsen Nakanoya (横川温泉 中野屋旅館) sits in the forested hills of Satomi, Ibaraki, and has been running for roughly 200 years. The spring is artesian, meaning it rises on its own without pumping, and the water is a clear, faintly slippery sulfur spring that warms you through. Separate large baths for men and women, plus private baths (kashikiri, 貸切風呂) you can book by the hour. The facility also has a ganbanyoku (岩盤浴), a low-temperature stone sauna with a tourmaline-inlaid floor. The inn accepts day visitors as well as overnight guests.
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Last updated October 7, 2026