Saga Saga City
Saga's famous hot spring with free-flowing natural spring water and a theater sauna
"Saga no Yudokoro KOMOREBI" is a day-use hot spring facility in Saga City, Saga Prefecture. Its private free-flowing sodium bicarbonate spring, bubbling up from 1,126 meters underground, leaves the skin feeling smooth and is beloved as a beautiful-skin bath. Work up a sweat in three distinctive saunas: the stadium-style "ISO Sauna," which boasts one of the largest capacities in Japan; the aroma-filled automatic löyly "HAJU Sauna"; and the outdoor barrel sauna. With eight bathing options, including an open-air bath overlooking a bamboo grove and a high-concentration carbonated spring, plus a rest lounge with tatami seating and a secluded nest-like space, it is easy to unwind at a relaxed pace.

A private spring bubbling up from 1,126 meters underground, offered as free-flowing water. The sodium bicarbonate spring is known as a beautiful-skin bath and is highly effective at softening the skin and leaving it smooth. The water feels silky, and after bathing your skin feels moist and hydrated. With a generous flow rate of 625 liters per minute, fresh water constantly fills the baths. It also has excellent heat-retaining properties, gently warming and relaxing tired bodies after the sauna. Benefits such as relief from muscle pain, rheumatoid arthritis, neuralgia, sensitivity to cold, and recovery from fatigue can also be expected, and you can enjoy the spring in a variety of baths, including the open-air bath overlooking a bamboo grove, indoor baths, and pot baths.

A stadium-style sauna with one of the largest capacities in Japan. About 70 guests sit on tiered benches and can experience Finnish-style löyly while watching video displayed on two large screens. Waves of heat roll through the vast space, creating an immersive atmosphere like watching a live sports event as everyone sweats together. The circulation of heat and steam wraps the whole body, drawing out sweat with overwhelming scale. Its appeal lies in a löyly experience unlike anywhere else, enjoyed with a large group.

A women-only sauna where you can enjoy carefully selected aromas with automatic löyly once an hour. Authentic Finnish-style löyly is delivered automatically, filling the room with waves of heat and the scent of aroma. Part of the fun is waiting for the löyly cycle, then slowly working up a sweat while surrounded by fragrance. A comfortable space designed with women in mind, offering soothing heat and the relaxing effect of aroma for a truly restful experience.

A barrel-shaped sauna installed in the women's open-air area. Self löyly is available, giving you the freedom to adjust the heat at your own pace. The barrel shape encourages good circulation of heat and steam, allowing efficient sweating in a compact space. Because it is set outdoors, you can enjoy the sauna while feeling the fresh air, adding to the sense of openness. In this private-feeling space, you can fully enjoy your own sauna time.

A cold plunge bath placed for smooth flow from the sauna. It is spacious enough for many people to use at once, allowing bodies heated all at once in the sauna to cool down smoothly. Its crisp coldness tightens the whole body and quickly releases the heat from the sauna. The roomy space means little waiting and an easy, stress-free cold plunge bath experience.

A pleasantly cool bath that gently cools the body while leaving a pleasant aroma lingering. Skin warmed by the sauna tightens gently, and when combined with the beautiful-skin spring, it may also help improve skin condition. In a clean, women-friendly space, you can cool down at your own pace. After the cold plunge bath, it is recommended to relax in the open-air air-bathing area.
Irregular Holidays
Parking for 200 cars, including spaces for guests with disabilities
Visited by the Editor-in-Chief
The Editor-in-Chief visited in person in February 2026
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