Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Effortless float
LowHigh
Dense, salty water — you float without effort.
SodiumChloruresBrome
Ofurocafe Biwakoza, in Ōtsu (Shiga prefecture) by Lake Biwa, heats sodium-chloride water to 41°C. The venue blends a bath-cafe concept with an indoor bath, an outdoor rotenburo bath, and a sauna.
Insider tip — Biwakoza Ofurocafe serves Otsu City on the shore of Lake Biwa — Japan largest lake at 670 square kilometres — in a unique bath-and-cafe concept pairing thermal soaking with specialty coffee and lakeside dining culture. Otsu was briefly the imperial capital of Japan under Emperor Tenji (667-672 CE), and the city preserves remarkable cultural monuments including the ancient Enryakuji temple complex on Mount Hiei — headquarters of the Tendai Buddhist school that shaped Japanese religious history for over a thousand years and commands views over the entire Lake Biwa basin.