天平の湯温泉
Tenpyo-no-Yu Hot SpringOperated by · ラ・ロイヤル・スパ
A sodium chloride spring with a bicarbonate layer — the chloride side gives heat-retention while the bicarbonate adds a softer feel on the skin. Weakly alkaline at pH 7.6, soft on the skin in the manner of Japan's beauty-water family. The source emerges at 33.1 °C (a low-temperature spring), so the bath is heated year-round, recirculated within the tub only, and disinfected with sodium hypochlorite.