Gero KōYō Kan Bekkan Wan Haku Tei

Wanpakutei is the dog-friendly annex of Gero Koyokan, a ryokan in Gero Onsen. There's a garden open-air bath called Hoshizuki no Yu (星月の湯) and an indoor bath, both filled with smooth, mild alkaline spring water, but neither is open to dogs. For bathing with your dog there's a separate private bath you book ahead, for an extra charge. Tattoos aren't accepted in any of the baths.