Yunokuni Kaikan

A higaeri spot. Very interesting alkaline water. The men's rotenburo has a river view. Rotenburo has 2 baths. One inside. Two saunas (hotter and regular) and a cold bath at 25 degrees :( The cold bath is interesting though! It's a reisen — a cold onsen. Photos from Google.

249. Yunokuni Kaikan, Izu Public onsen for 1000, listed hours 10:00–21:00 (except Wed). They stamp the 60 Onsen of Shizuoka 24/25 booklet. Has a restaurant (tasty), a shop, and chill zones. Online photos match. 1. Indoor area, comfortable to breathe inside. 1.1. Rectangular bath with clear water, temperature 40. 1.2. Sauna. 1.3. Small cold bath. 2. Outdoor area. 2.1. Herbal bath with clear-greenish water. Temperature 38. There's a pleasant river view, although quite narrow. 2.2. Second outdoor bath. Clear water, temperature 39–40. Pleasant place. Worth visiting if you're nearby. The food was great too.