There is a source tower on the premises, and the spring water is pumped up from 480 meters underground. It is one of the most golden-colored hot springs in Gora, and is a high-temperature, slightly alkaline sodium chloride spring with a high concentration of constituents. It is said to be effective for skin smoothing, joint pain, bruises, sprains, sensitivity to colds, women's diseases, and chronic digestive disorders.

All of the baths at the ryokan, including the large public baths and the open-air baths in guest rooms, are free-flowing hot-spring water, which is never circulated. The hot spring water is 80-90 degrees Celsius, so it is watered with Gora's underground water from a well on the premises to lower the water temperature, but I think it is a great feature that the entire building provides hot water that is not circulated. We have gained a reputation for providing safe, high-quality, fresh hot spring water for bathing enjoyment.

The large bathroom was renovated in December 2021. In the half-open-air bath, guests can enjoy the hot spring water from the source in a large bathtub with a beautiful borrowed view of the garden. It can be a bit cold except in summer, so we recommend that you bathe after warming up once in your room, but we think it is exceptional to bathe while enjoying the fantastic panoramic view of the grand borrowed scenery.

Byakudan offers authentic kaiseki cuisine that allows diners to enjoy the four seasons. About 30% of the ingredients come from Kanagawa, our hometown, and 70% are imported from all over Japan.

As for the beverages, we have a wide selection of Japanese sake, including local sake from Kanagawa and other rare sakes from all over Japan. Our wines are also basically made in Japan. We have wines from Yamanashi, Hokkaido, Iwate, Kyoto, and many other regions, but to avoid disturbing the delicate broth of kaiseki, we avoid oak-brewed wines with a strong oak smell and stick to a lineup of only stainless steel-brewed wines. All soft drinks are also basically organic. Since the focus of the meal is the food and the drinks play a supporting role in the enjoyment of the food, we carefully select beverages that complement the food.

The guest rooms are named after the lyrics of "Hakone Hakoli," and there are 6 two-room type rooms (total area 110 m2 to 65 m2) and 10 one-room type rooms (total area 50 m2 to 35 m2). Each room has a different view to enjoy, but all rooms have a large open-air bath with free-flowing spring water and a deck with a view.

While most of the open-air baths in guest rooms are small, our guest room open-air baths are spacious enough for two or more people to enjoy in comfort. The view deck is also spacious enough to lay out a yoga mat. The size of the open-air baths and decks in the guest rooms is what sets them apart from other ryokans. The guest rooms, like the building itself, are designed to allow guests to fully enjoy the natural surroundings outside.

The windows are large enough to let nature in, and the furniture is arranged in translucent pieces, such as rattan chairs by a famous modern Japanese designer, so that nature can be seen through the windows and furniture, and the view of the guests is kept as unobstructed as possible.