Saionji Residence (西園寺邸) is the home to the Saionji family. It is located in Fujisawa, Kanagawa prefecture, near the Katase-Enoshima railroad station. Kanata Rivington is also staying in this house during his visit to Japan.
The house bears resemblance to the "Granfree" concept home designed by real estate company Mitsui Home[1]. Many variations of the concept have been built for display across Japan, but the one that matches Saionji residence used to be located in Nerima, Tokyo[2].