Hours: Weekdays 9:00–19:00 / Sat, Sun & Holidays 9:00–17:00
Deep Sea Water Akazawa Spa
Restore body and mind with the gifts of the sea
A spa facility born from the French marine therapy known as thalassotherapy, devoted to beauty, well-being, and deep relaxation of body and mind
Thalassotherapy
Grow beautiful and well from within, through the gifts of the sea. This French marine therapy awakens your body's own power to heal.
Thalassotherapy is a French marine therapy whose name joins two roots: the Greek "Thalassa," meaning "sea," and "Therapy." A medically recognized natural therapy, it draws on a maritime climate and the gifts of the sea—seawater, seaweed and more—to revitalize the body from within, and has long been cherished by many across Europe, above all in France. By invigorating the cells, it is said to strengthen the body's natural power to heal.
Deep Sea Water Thalasso Pool
A blissful moment, feeling the bounty of the deep sea with your whole body.
Fresh seawater drawn from 800 meters down off the coast of Akazawa is warmed and used to fill the pool. Surrender to the gentle embrace of warm seawater and let body and mind fully relax.
"Ancient Waters"
A Pool of 100% Pure Deep Sea Water"Water of Antiquity" — A Pool of 100% Pure Deep Sea Water
A miraculous water, rich in minerals
Deep sea water drawn from 800 meters down is rich in the minerals that revitalize the body from within. Working on the cells, it helps lead you toward clearer skin and reduced puffiness.
A healing time, surrendering to warm seawater
The buoyancy of seawater and a massaging current ease away the fatigue and stress of daily life—the ultimate relaxation, drawing you toward deep sleep.
A miraculous water, rich in minerals
Deep sea water is a beautiful, pure and miraculous water that has journeyed through the depths since ancient times. Along the way it has gathered a wealth of nutrients—minerals, ions and more—that the body needs. We warm this fresh seawater, drawn from 800 meters down off Akazawa, and use it to fill the pool.
A healing time, surrendering to warm seawater
In the deep sea water thalasso pool, the buoyancy of the seawater puts you at ease; as your senses meet the water, tension and stress melt away and the heart is soothed. Directing the current against your body loosens the muscles for a pleasant, effective massage. When you step out of the pool, a comfortable tiredness settles in and the body feels reset.
Features of the Deep Sea Water Thalasso Pool
For boosting fat burning, and those mindful of lifestyle-related conditions
Exercise using water resistance and buoyancy
Walk against a counter-current, feeling the resistance of the water. Taken slowly, it eases you out of inactivity without strain.
For clearer skin, and those mindful of puffiness
Massage using water flow and pressure
After walking, massage the body with a jet current. The muscles loosen for a pleasant, effective massage.
For relieving stress, and those prone to sleeplessness
Relaxation through water temperature
Pleasantly warm seawater gently envelops the body. As your senses meet the water, you ease slowly into deep relaxation.
FACILITY
FacilitiesRestore body and mind across a wealth of facilities— sauna, hot stone bath, warm bath and more
Barrel Sauna
A barrel sauna wrapped in the warmth of wood. Its rounded form circulates the heat evenly, for a blissful moment of warming slowly from the core.
Dry Sauna
A classic Finnish sauna where high, dry heat envelops the whole body. Work up a good sweat and refresh body and mind.
Private Sauna
Time entirely your own, free from any other's gaze. Adjust the heat and pace your breaks just as you please, and experience the finest "totonoi" in a luxuriously private space.
3,800 yen / 2 hours
Hot Stone Bath
Lie upon warmed natural stones and let the heat seep gently to your core. Detox and deep relaxation, in a tranquil space.
Warm Bath
A healing moment of unhurried rest in a gently warmed space. Between sauna and hot stone bath, find deep relaxation in soothing warmth.
Café Lounge
Cool down a body warmed by the spa. A luxurious time spent unwinding on a generous sofa, drink in hand. Savor the lingering glow of "totonoi" that only being right here can offer.
Hours: 11:00–14:00
*Drinks and desserts are available for purchase until 19:30
Barrel Sauna
A barrel sauna wrapped in the warmth of wood. Its rounded form circulates the heat evenly, for a blissful moment of warming slowly from the core.
Dry Sauna
A classic Finnish sauna where high, dry heat envelops the whole body. Work up a good sweat and refresh body and mind.
Private Sauna
Time entirely your own, free from any other's gaze. Adjust the heat and pace your breaks just as you please, and experience the finest "totonoi" in a luxuriously private space.
3,800 yen / 2 hours
Hot Stone Bath
Lie upon warmed natural stones and let the heat seep gently to your core. Detox and deep relaxation, in a tranquil space.
Warm Bath
A healing moment of unhurried rest in a gently warmed space. Between sauna and hot stone bath, find deep relaxation in soothing warmth.
Café Lounge
Cool down a body warmed by the spa. A luxurious time spent unwinding on a generous sofa, drink in hand. Savor the lingering glow of "totonoi" that only being right here can offer.
Hours: 11:00–14:00
*Drinks and desserts are available for purchase until 19:30
INFORMATION
Facility Information
| Hours | 10:00–20:00 (Last admission 19:00) Café: 11:00–14:00 *Drinks and desserts are available for purchase until 19:30 |
| Price | Admission¥3,500 |
Swimsuit Rental¥500 | |
Private Sauna (2 hours)¥3,800 | |
Book of 10 Tickets¥25,000 | |
*For guests of junior high school age and above *All prices shown include tax |
From February 1, 2025, guests with tattoos (including body paint) are kindly asked to refrain from entering. Exceptions may be made at our discretion, in accordance with our established criteria.
