A large bath located on the top floor of the Tsuki no Kan. Through the large windows, guests can look out over the Pacific Ocean horizon and enjoy an elegant bath while taking in the flow of the Okita River and the beautiful sunset sinking into the Abukuma Mountains. The soft simple sulfur cold mineral spring of Isobara Onsen, the source here, is mildly alkaline and outstanding for beautiful skin. Wrapped in the gentle scent of sulfur, this large bath offers smooth, mellow water that melts away daily fatigue from deep within the body.

A private open-air bath where you can hear the sound of the waves up close and gaze out at the sea. There are two baths: Kai no Yu, with a different atmosphere, and Tenhi no Yu, which has a larger tub and is comfortable even for groups. At night, you can fully enjoy the signature simple sulfur onsen while gazing at the fantastical moon floating above the sea, the star-filled sky, and the stars reflected on the water. This luxurious open-air bath offers the ultimate private time and the blessings of onsen.