The main large public bath consists of the indoor bath on the 9th floor, the Observation Large Bath EZOFUJI, and the Sky Open-Air Bath TENQOO on the rooftop of the top floor. The spectacular infinity open-air bath, where the hot spring and the lake surface seem to merge, offers an overwhelming sense of openness, and on clear days you can see Nakajima and Mt. Yotei. In the indoor bath, a variety of tubs such as reclining baths, standing baths, and seasonal baths are arranged in a refined design of granite, and the soft water of the sodium-calcium chloride spring warms the body from the core and enhances heat retention.

A unique large public bath that faithfully recreates the details of the everyday sento of the good old Showa era. Tiled bathtubs, a mural of Ezo Fuji painted dynamically, yellow Kerorin buckets, retro scales, and other nostalgic touches are scattered throughout. There are two bathtubs: one with plain hot water and the other with sodium-calcium chloride spring water, allowing you to relax and fully enjoy high-quality hot water in a playful setting.

A fully reservation-based private spa located on the top floor of the spa resort building. From the large windows, you can enjoy a panoramic view of Lake Toya and the towering Mt. Yotei without being disturbed by anyone. It is filled with high-quality sodium-calcium chloride spring water, making it ideal for families or couples to spend a luxurious, private time together. While admiring the changing natural beauty of Toya as time passes, you can fully enjoy an exquisite private spa experience.

An exclusive observation hot spring bath provided in the onsen-bath rooms of the premium building, Nonokaze Club. Even while staying in your room, you can take in the beautiful panoramic view of Lake Toya through the window, and enjoy the smooth sodium-calcium chloride spring water all to yourself whenever you like, 24 hours a day. In a completely private space, you can immerse yourself in the nature and hot springs of Toya in silence, and enjoy a supreme luxury buffet and an exceptional bathing stay.