137. Minamisuka Onsen, Beppu ★ A no-frills onsen for ¥100. The posted hours are 06:00 to 10:00 and 13:00 to 22:30. They stamp the Beppu Onsen-do seal. No staff, no shower. The water is clear, and the temperature is 47.6. It is comfortable to breathe inside. If the bath is not diluted, the high temperature is for enthusiasts. 02.05.2024 03.01.2026