Adjacent to Nijo-jo Castle on the historic site of the Mitsui family home, Hotel The Mitsui Kyoto is a 160-room Luxury Collection property that reimagines the traditional Japanese tearoom . Rooms range from 43sqm Deluxe Rooms to the 112sqm Nijo Suite with panoramic castle views and the Onsen Suite with a private outdoor bath fed by natural hot springs . All rooms feature stone bathtubs, carefully chosen natural materials, and garden or city views, with some suites offering exclusive access to the on-site natural onsen . The hotel also offers in-room dining, turndown service, and a pillow menu.