Hakone Sengokuhara Prince Hotel (formerly Hotel Daihakone) has undergone its first renovation since its opening in 1992. concept design concept is "relaxation x sparkle x intelligence." The hotel interior, concept design with a motif of "Hakone marquetry," features a luxurious restaurant, an open-air bath where you can experience the majestic nature, and two guest room buildings themed on "kodachi = the impression of the beautiful trees of Mt. Hakone" and "Hikari = the angelica blooming on the plateau and the shining Japanese pampas grass of Sengokuhara," creating a space where you can feel nature and intelligence. In this project, which transformed the hotel into a modern hot spring resort that is in harmony with nature and is one of a kind in Hakone, one of Japan's leading hot spring areas, we assisted with the basic concept design, layout, planning, production, and construction.