A barrel sauna where guests can warm their bodies while gazing at the azure sea and sky. Self-löyly is available, allowing guests to choose their preferred aroma—from local island scents such as Gettou (Shell Ginger), Ryukyu Pine, and Plumeria—to promote perspiration. Additionally, sauna hats and mats finished with Aizome (indigo dyeing), a traditional island craft, are provided. The ability to participate without bringing anything (hands-free) is another major appeal.

After warming up, guests can cool their bodies in a cold bath constructed with Ryukyu Limestone, which blends seamlessly with the island's natural environment. Once the cold bath is complete, move to the open-air relaxation chairs floating over the sea. Here, you will be enveloped by the ocean breeze and the sound of the waves, creating an immersive experience with nature. Following the sauna experience, Gettou-derived (Shell Ginger) skincare items are available to gently care for your skin.

Finally, guests can savor a sauna beverage featuring seasonal tropical fruits. With non-alcoholic cocktails highlighting the taste of the season—such as pineapple in spring and mango in summer—guests can refreshingly replenish lost minerals.