三重城温泉 海人の湯

Miegusuku Onsen Uminchu no Yu is the hot spring on the second floor of Loisir Spa Tower Naha in Nishi, fed by 8-million-year-old fossil seawater that rises from 800 m below at 40.9°C. It has indoor and outdoor baths and a cold water bath; the men's side has an 85°C dry sauna and the women's side a 42°C steam sauna. The baths are open 7:00 to 23:00, but day visitors are received from 9:00 to 17:00 and pay ¥3,500, or ¥2,500 with a digital ticket bought in advance. Tattoos are not allowed.

Monday to Sunday: 7:00 AM – 11:00 PM