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A renowned riverside estate with two distinct personalities.
The clear Otozure River, where koi and ayu fish can be seen swimming, flows gently through the area.
Nestled along its banks in the renowned Yumoto Hot Springs of Yamaguchi stands the distinguished Otani Sanso, a landmark that radiates quiet elegance.
The main building features traditional Japanese elements, including refined sukiya-style guest rooms, two expansive Grand Baths that refresh both body and mind, and a lush Japanese garden—creating a serene and authentic atmosphere perfect for peaceful moments.
In contrast, the exclusive Bettei Otozure, where all rooms come with private open-air baths, offers a more secluded and intimate experience. Its distinctive design invites guests to fully unwind and “hide away,” earning attention as a new style of Japanese luxury retreat.
Otanisanso
Yamaguchi / Nagatoyumoto Onsen
Message from the Ryokan
Otani Sanso is nestled along the peaceful Otozure River, surrounded by the quiet mountains of Nagato, Yamaguchi Prefecture.
We welcome our guests with heartfelt hospitality and thoughtful touches that reflect the beauty of nature in every season.
Take a moment to step away from the everyday and enjoy a truly restful stay.
We sincerely look forward to welcoming you.
The Charm of Our Guest Rooms
Bettei Otozure / Japanese-Western Room
A luxurious retreat where the harmony of Japanese and Western design evokes the feeling of visiting a serene mountain villa.
Nestled along the banks of the Otozure River, Bettei Otozure is an exclusive retreat where every guest room features a private open-air bath.
Each uniquely designed room combines a spacious Japanese-style area, a calming bedroom, and an expansive living space.
The innovative layout of these interiors offers a refreshing and unexpected experience for every guest.
A modern space infused with the essence of Japanese style, offering a relaxing and spacious atmosphere — Room example.
Fuyo Premium
Enjoy the view and a moment of tranquility as you relax on the sofa by the window.
Spacious 128cm-wide beds are set atop soft Ryukyu tatami flooring, offering both comfort and elegance.
Located on the 4th to 6th floors of the Fuyo Wing, these rooms feature a striking floor-to-ceiling window that opens to a view of lush greenery and the gentle murmur of the Otozure River — a perfect setting to lose track of time and simply unwind.
Japanese-style room with beds — Room example.
The Charm of Our Baths
Grand Bath “Seseragi no Yu”
[Hours of Use]
6:00 – 23:30
Note: Men’s and women’s baths alternate during the day.
Located on the first floor of the Fuyo Wing—the main building—Seseragi no Yu is a natural hot spring bath with serene views of the surrounding mountains and river.
In addition to a spacious indoor bath made of granite, it features a cypress open-air bath where you can hear the soothing murmur of the Otozure River, as well as a jacuzzi and reclining baths—each thoughtfully designed to provide deep relaxation and comfort.
Spacious Grand Bath surrounded by nature — Image for illustration purposes.
Grand Bath “Komorebi no Yu”
[Hours of Use]
6:00 – 23:30
Note: Men’s and women’s baths alternate during the day.
Located on the second floor of the Fuyo Wing, Komorebi no Yu is a spacious Grand Bath designed to offer a sense of openness.
Facilities include a semi-open-air bath overlooking the lush greenery along the Otozure River, soothing cypress-scented reclining baths, and a sauna—perfect for enjoying a variety of bathing experiences.
Among them, the aromatic herbal open-air bath is especially popular with female guests.
Enjoy a variety of hot springs for a complete bathing experience — Image for illustration purposes.
Notice & Information
The photos shown are provided by the ryokan or hotel.
Images of meals and guest rooms are for illustrative purposes only.
The above information and prices are subject to change. Please confirm the details in advance before use.