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Last Updated on December 15, 2025
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A Healing Retreat Embraced by Sea and Mountains: Mellow Hot Springs and Local Delicacies
Tosa Ryuo Onsen Sanyoso is a serene inn located in Usa-cho, Tosa City, offering a stunning location right in front of the Pacific Ocean. Its rare high-temperature, mineral-rich cloudy hot spring—unusual for Shikoku—is a chloride spring known for its warmth and moisturizing effects, gently soothing both body and soul. In addition to its spacious indoor baths, the facility features an open-air bath overlooking a garden and a footbath, allowing guests to relax peacefully in open surroundings. With 56 clean and functional rooms in both Japanese and Western styles, this lodging offers not only a rejuvenating soak in natural hot springs but also leisurely meals featuring local ingredients. It’s a reliable rest stop that helps foster the strength to say, “I’m ready to walk again.”
Basic information
| Address | 504-1 Ryu, Usa-cho, Tosa-shi, Kochi |
| Phone number | 0120-154-592 |
| Parking | Available (free) |
| Number of room(s) | 54 rooms |
| Price | Room only : 7,700 yen or more With breakfast : 8,800 yen or more With dinner : — Half board : 9,900 yen or more |
| Website | sanyo-so.co.jp |
| Check-in | 15:00 – 21:00 |
| Check-out | 9:00 |
| Wi-Fi | ✓ Available (free) |
| Laundry | Washing machine: ✓ Available (details unknown) Dryer: — |
| payment | Cash: ✓ Accepted Credit card: ✓ Accepted e-money: — |
Supplementary information
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Learn more about "PILGRIMAGE MAP MADE BY EVERYONE” »
Map
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Greetings from the owner
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User’s voice
User’s voiceUser Review Summary (from external sites)
Sources: Google Maps / Rakuten Travel / Jalan / Booking.com / TripAdvisor / Yahoo! Travel, and others
Guests often praise the cleanliness and comfort, saying, “The rooms and hallways were surprisingly spotless after renovation,” and “The private bath with direct hot spring flow was so relaxing.” The cuisine is also highly rated, especially the fresh Ise lobster sashimi and salt-seared bonito, with reviews noting, “Both the quantity and flavor were satisfying.” Staff hospitality is another highlight, with comments like “The staff greeted us warmly and worked hard to make our stay pleasant,” providing a sense of security and comfort throughout the visit.
Other comments include, “Great location and quiet surroundings,” and “Perfectly fits into the walking pilgrimage route.” A few reserved remarks mention, “Amenities could be a bit more comprehensive,” or “Some noise from neighboring rooms,” but these are outweighed by the positive voices. Many say, “I want to come back for the hot spring and warm service.” Overall, it’s widely supported as a dependable inn offering quality hot springs, food, and hospitality.
It’s a luxurious inn for pilgrims, but the food was delicious and the hot springs were very nice.
★★★★★ (5 out of 5 stars)
Above all, the morning sun from the room is wonderful. (Ocean side room)
It might be a good idea to stay at an inn like this once in a while to get rid of your fatigue.
