Two Rare Natural Hot Springs
“Gold Hot Spring” & “Silver Hot Spring”
SOSO features two rare natural hot springs — the Gold Hot Spring and the Silver Hot Spring.
These two baths are located side by side, allowing guests to enjoy both alternately and even simultaneously.
Semi-Open-Air Bath “Gold Onsen”
Rich in iron, the Gold Onsen appears colorless and transparent underground but turns reddish brown when exposed to air due to oxidation.
It has a faint iron aroma and a gentle, smooth texture on the skin with minimal irritation.
While soaking in this semi-open-air bath, guests can warm themselves to the core as they take in the sea views and the changing seasons.
This mineral-dense hot spring is rich in salt and highly antibacterial, providing excellent heat retention, moisturizing effects, and promoting blood circulation along with numerous other benefits.
- Spring Quality
- Sodium–Chloride Strong Saline Hot Spring
- Benefits
- Effective for neuralgia, muscle pain, joint pain, frozen shoulder, motor paralysis, joint stiffness, bruises, sprains, chronic digestive disorders, hemorrhoids, sensitivity to cold, recovery after illness, and fatigue recovery.
IndoorSilver Onsen
Rich in metasilicic acid, a natural moisturizing component, this “beauty-enhancing hot spring” is known for promoting healthy skin metabolism and leaving the skin smooth and radiant.
A distinctive feature of the Silver Onsen is the presence of gentle bubbles derived from its natural carbonated composition. These soft bubbles envelop the skin, enhancing both moisturizing and beauty effects.
Enjoy a soothing soak while gazing out at the sea—an especially exquisite experience at night.
Immerse yourself in the clear, silky water and indulge in a truly luxurious moment of relaxation.
- Quality
- Weakly Alkaline / Simple Hot Spring
- Benefits
- Effective for osteoarthritis, lower back pain, neuralgia, frozen shoulder, sprains, sensitivity to cold, peripheral circulatory disorders, decreased gastrointestinal function, mild hypertension, glucose intolerance (diabetes), mild hypercholesterolemia, mild asthma or emphysema, hemorrhoid pain, and autonomic nervous instability.
Bathing Prohibitions
2:Entering the pool directly from the open-air bath—or entering the open-air bath or indoor area directly from the pool—is not permitted.