An authentic Finnish-style sauna using kelo, the standing-dead wood from Finland, on the walls and low-thermal-conductivity abachi wood for bench backs. The room temperature is kept uniformly around 90°C, and the mellow heat characteristic of kelo spreads gently so the sensation is enveloping rather than sharply stimulating. Automatic löyly is applied every 20 minutes to maintain moderate humidity, and authentic aufguss led by staff is held daily. Minerals and negative ions released from rock salt deepen relaxation, allowing long, unhurried sessions of sweating while enjoying views of Yokohama.

A sauna room dedicated to self-löyly using IKI's MONOLITH stove with Finnish olivine stones. Hinoki (Japanese cypress) is used for the walls and benches, letting you control the amount of steam at your own pace while wrapped in the warmth of wood. With each application of löyly the humidity rises and you feel sweat gradually appear on the skin. Whereas the Main Sauna is a pro-led performance, this room offers a user-driven sweating experience favored by regulars.

A uniquely designed sauna combining two stoves (Twin tower) with a BonaSerm-style sauna module and Thermale hot-water pipes to deliver heat evenly from four directions. Set at a mid-temperature with about 25% humidity, it provides a gentle warmth that envelopes the body without causing breathlessness.

A steam sauna using European-imported tiles that warms the entire room evenly by radiant heat from floor and wall heating. Temperature, lighting, aroma, and the sound of a fountain combine to engage all five senses, promoting slow, thorough detoxification in the steam. Salt is provided for self-massage, which is a distinctive feature and can help leave skin feeling smooth.

A large-space, program-style sauna in the low-to-mid temperature range. It offers aufguss, meditation, and yoga, and uses performance elements of sound, light, and wind to regulate body temperature and breathing. Overlooking Yokohama's scenery, it guides participants toward a gentle totonou.

Designed for alternating hot-and-cold bathing after sauna sessions, the cold plunge bath is kept at approximately 15°C. The temperature is delicately balanced so it is not too cold, comfortably cooling an overheated body. It helps tighten pores opened by the sauna and gently settles the afterglow of heat.

An indoor cold plunge bath with an amethyst installed at the water inlet, which is said to purify the water. It is set about 2°C warmer than the men's bath at 17°C, making it comfortable for longer, slower soaks. The water feels clean on the skin and is easy to use repeatedly; with each round trip between sauna and bath, the feeling of lightness increases. After the cold plunge bath, you can spend your totonou (state of perfect relaxation) time in a relaxation area equipped with warm beds and reclining chairs while enjoying views of Yokohama.