"Kurofune Hotel" is a long-established resort hotel in Shimoda City, Shizuoka Prefecture, with sweeping views of Shimoda Bay. Its large public baths, Umiharano-yu and Nagisano-yu, feature Izu-stone open-air observation baths that create a powerful sense of unity, as if you were connected to the sea itself, with gentle simple hot spring water flowing through them. The indoor baths are paired with a compact high-temperature dry sauna that wraps the body in plenty of heat. The hotel also offers luxurious suite rooms equipped with a private sauna, a cold plunge bath, and a room with a private open-air hot spring bath.