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Hot springs
A newly reborn, fulfilling Hot springs
A gentle warmth spreads through your entire body,
as you spend blissful moments in an open-air bath while listening to the chirping of birds.
Enjoy a luxurious time to heal your mind and body.
A dry sauna and "Totonoi Space" have also been newly added,
further expanding the range of relaxation experiences available.
Silica (metasilicic acid) contained in our hotel's hot spring: 142.0 mg/L
This is much higher than the standard for hot water for beautiful skin (50 mg or more), and is a spring quality that moisturizes the skin.
In October 2025, mist sauna and mud pack facilities were newly introduced.
Please visit the ever-evolving Sensuikyo hot spring and experience the ultimate in healing.
Suisenkyo Hot springs
Renewal in 2025
open-air bath
Aso open-air bath embraced by nature has been reborn as even more luxurious.
While looking at the scenery of the four seasons, you can enjoy a relaxing moment to heal your mind and body in the Hot springs of the private hot spring.
The open-air baths, which are interchangeable between men and women, offer two different atmospheres, Western-style and Japanese-style, which are changed daily.
Renewal in 2025
Large public bath
Hot springs, which gently warms you to the core, comes from our own hot spring source, Sensuikyo Hot springs.
The quality of this spring water is said to give the skin firmness and moisture, and is expected to have a skin-beautifying effect, making it ideal for improving sensitivity to cold and dry skin.
Enjoy a luxurious bath that will soothe both your body and mind.
Newly established in 2025
Sauna
Dry sauna
The dry sauna stimulates blood flow throughout the body and relieves daily fatigue and stress along with sweat. It is a space surrounded by heat and silence, and the mind and body are relaxed. The "Totonoi" experience after the sauna goes perfectly with the open-air bath surrounded by Aso 's nature. It warms the body from the inside and can be expected to be effective in refreshing the skin and physical condition.
mist sauna
The mist sauna, surrounded by soft steam, gently warms the body while moisturizing the skin. It promotes blood flow, gently relieves daily fatigue, and supports skin firmness and moisture. Experience a luxurious and soothing moment, where you can regulate your breathing in the silence and relax both body and mind.
Relaxation space
After warming up in the sauna or Hot springs, relax in a quiet "totonoi" space. Surrounded by the pleasant breeze and Aso nature, you can regulate your breathing and relax from the inside out. Forget about everyday life and enjoy a luxurious moment where your mind and body are refreshed.
Natural Hot springs Mud Pack
Mud packs made with natural Hot springs gently remove dead skin cells and dirt from the skin, leaving it hydrated and firm. The mineral-rich natural mud stimulates blood circulation while conditioning the skin, giving it a moist and smooth texture. With the synergistic effect of Hot springs, you can enjoy a luxurious skincare experience that refreshes your body from the inside out.
Pickup
This mud pack is a "KAMENOI HOTEL ASO" original that was handmade by the staff from scratch. Starting with the process of suppressing the unique odor of the source, it was completed through many trials and errors, from the study of the formulation, the selection of ingredients, and the selection of tools. Aso's hot spring water has a low temperature and is difficult to mix with bentonite, which is the raw material, so it can take more than 3 hours to become a smooth muddy form. The mud pack created in this way firmly absorbs dirt from the skin, leaving the skin smooth. Please enjoy the beauty experience that can only be experienced at KAMENOI HOTEL ASO, a signature offering of our hotel.
＼NEW／
Shampoo bar
In the large public bath of the hot spring, we offer a “shampoo bar” featuring a selection of popular brands. You can choose your preferred shampoo and conditioner according to your hair type and mood. As you can select products based on your hair condition, the facility can be comfortably enjoyed by the whole family. Make your time in the hot spring even more enjoyable.
Pickup
After a warm and refreshing Hot springs, a little pleasant reward is in store. We have prepared cool ice cream for you at the after-treatment area. Hot springs Please take a moment to relax and enjoy the afterglow of the hot spring.
Blessed by the active volcanoes of the Aso mountains, Hot springs. Please enjoy the bounty of the earth that wells up from the mountains.
| Business Hours | 5:00～9:00 15:00～24:00 |
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Spring Quality and Indications
| Spring quality | Sodium Magnesium Sulfate, Bicarbonate Hot springs (hypotonic, neutral, Hot springs) |
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| Indications for This Hot Spring | Chronic pain or stiffness of muscles or joints (rheumatoid arthritis, osteoarthritis, lumbago, neuralgia, frozen shoulder, bruise, sprain, etc.), muscle stiffness in motor paralysis, sensitivity to cold, peripheral circulatory disturbance, decreased gastrointestinal function (upset stomach, gas in the bowels, etc.), mild hypertension, impaired glucose tolerance (diabetes mellitus), mild hypercholesterolemia, mild asthma or emphysema, hemorrhoidal pain, autonomic instability, various stress-related symptoms (sleep disorder, depression, etc.), convalescence, recovery from illness, fatigue, etc. Mild hypercholesterolemia, mild asthma or emphysema, hemorrhoid pain, autonomic instability, stress-related symptoms (sleep disorder, depression, etc.), convalescence, recovery from fatigue, health promotion |
Day Trip Bathing Information
Hot springs gush forth from our private hot spring source on the premises. Enjoy a relaxing time soaking in the open-air bath while listening to the birds chirping.
| Business Hours | 15:00～21:00 (Registration closes at 20:00) |
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| usage fee | 1,000 yen (junior high school students and above) 500 yen (elementary school students) |