Sakura Onsen in Nakatsu City, Oita Prefecture. The spacious main bath area offers a variety of pools including a carbonated spring that helps relieve fatigue, jet baths, and outdoor baths. There are two types of saunas: a Stadium Sauna using far-infrared heaters and a Salt Sauna that leaves skin smooth. The cold plunge bath is both deep and wide and is kept at about 16°C for a thorough cooldown. The open-air area is well equipped with reclining chairs and Adirondack chairs, providing an excellent environment for outdoor relaxation. You can also enjoy the bedrock spa at a reasonable price.