The main sauna room of Hokuyo. A spacious three-tiered space with a perfect balance of high temperature and humidity. Self-löyly is possible, and when you pour aromatic water on the sauna stones, rich steam rises in the room. As depicted in the drama "Sa-do," it is a space where sauna enthusiasts quietly face the heat. Sitting on the upper tier increases the perceived temperature, allowing for deep sweating in a short time. In a quiet environment without a TV, you can have a meditative sauna experience.

A relaxing space with a lower temperature than the first sauna room. The scent of cypress and camphor wood drifts, and healing music plays. The gentle heat gradually envelops your body, making it less burdensome even for long stays. Ideal for those who are not fond of high temperatures or want to warm up slowly. The scent of wood and relaxing music soothe the senses, relaxing both body and mind. By alternating with the first sauna room, you can create your own sauna routine.

A cold plunge bath designed to complement the high-temperature sauna. With a water depth of 60–80 cm, you can immerse yourself up to your shoulders. It quickly cools down your body heated in the sauna exceeding 100°C, providing a sensation of tightening blood vessels. Although there may be slight temperature variations by day, it generally offers a crisp coldness that removes body heat in a short time. The flow from the sauna room is well-designed, allowing you to fully enjoy the contrast between heat and cold.