Hinata no Yu

310. Hinata no Yu, Osaka Onsen in an office building, 22 minutes from Osaka station for 880-1000. The interior also feels like a small office was converted into an onsen with baths on a balcony, but that's more of a unique feature than a drawback. Operating hours listed as 06:00-01:00. They stamp the 41 Kansai Super Sento stamp rally 24/25. Has a restaurant, massage, foot bath, and massage chairs. Bath photos from the internet, roughly matches — judging by the orientation of objects, the photos are from the women's section, but very similar to the men's. 1. Outdoor area. Built on a large balcony of an office building, the city view is rather limited — definitely not the strong point, despite what they write on the official website. 1.1. Main bath with clear water, temperature around 41-42. 1.2. Polygonal bath with bubbles, clear water, temperature around 40-41. 1.3. Herbal bath (apparently an event bath). Had slightly greenish water with a scent, temperature around 39-40. 1.4. Two barrel baths, clear water. 2. Indoor area. Breathing is fine, no chlorine smell. 2.1. Bath with clear water, temperature around 42-43. 2.2. Sauna. 2.3. Cold bath. The bath and onsen section isn't super interesting level-wise, but the subtle atmosphere of the entire onsen being in an office building felt unusual and stuck with me. The staff was friendly and attentive — the girl at reception made sure I had two 100-yen coins for the shoe locker and the changing room locker.