A day-use hot spring facility located along Ōmura Bay in Nagayo, Nagasaki Prefecture. Its signature feature is a log house built in the azekura-zukuri style, using one of Japan's largest natural logs, creating a space filled with the warmth of wood. The proud hot spring is fed by a private source gushing from underground and used as 100% free-flowing spring water. The silky, slippery texture, rich in bicarbonate ions, is renowned as a beauty bath, and it is said to leave the skin smooth after bathing. From the open-air bath, you can take in sweeping views of the calm waters of Ōmura Bay, with the evening scenery being especially breathtaking.