A spacious large public bath in an open location with a sweeping view of the Sea of Japan, where guests can fully enjoy the natural hot spring of Aikawa Nagatemisaki Onsen. The water is mildly alkaline with a soft feel, and because it contains sodium and salt, it has excellent warming effects after bathing, gently warming you from the core. The beautiful waves breaking along Niiura Coast, seen from the open-air bath, and the stunning view of the sky and sea turning deep crimson at dusk create a special sense of healing that helps you forget the noise of everyday life.

The two private open-air baths, Ikaibi no Yu and Hokake no Yu, are set in the most scenic premium spot along the seaside in the expansive lawn garden. The bathtubs use deep seawater drawn from Sado’s rich natural environment, which contains abundant minerals. While feeling the pleasant sea breeze, you can enjoy a private bath in an exceptional sense of openness, as if you were melting into the sea itself. Their high bathing effect leaves both body and mind luxuriously refreshed.