73. Nanatsuishi Onsen, Beppu ★ An old-school onsen for ¥100. Opening hours are listed as 08:00 to 10:00 and 15:00 to 22:00. They stamp the Beppu onsen-do. No staff, no shower. Soap and towels are sometimes sold. There is no full water composition table. The water is clear, and the temperature is 43.5. It is easy to breathe inside. The place stands out for its interesting entrance area and the shrine on the grounds. You can tell it was made with care. 28.04.2024 03.01.2026