This indoor hot spring spa room is definitely an indispensable interior design concept for a Japanese theme island. Mortar Wall complements Flowing-river Flooring and Outdoor Bath, perfectly presenting a steaming and relaxing Japanese-style spa room. The water pattern of Flowing-river Flooring and the hot spring in the Outdoor Bath work perfectly and realistically. The Cypress Bathtub and Cherry-blossom Pond Stone in the right area are the icings on the cake for the design of this Zen Bathroom. Of course, it is indispensable to use some Japanese decorations such as Cherry-Blossom Branches and Low Screen to enhance the unique oriental beauty.