A “gift” from nature, the sulfur-containing sodium chloride spring has a limited daily supply. In order to provide the best possible water in the best condition, our large garden baths, “Tono-yu” and “Hime-no-yu,” use boiled water. Please use the large garden baths if you have sensitive skin, illnesses, or infants with sensitive skin. We also have a large bath with a spacious feel and a sauna room. In the “Hinoki Open-Air Bath” and “Oiwa Open-Air Bath,” which overlook the garden, a boy named Oyu-kake-kozo watches over you.