To provide storage space that has not conventionally been provided, on the wall side of a toilet constructed in space adjacent a bathroom.

The opposite wall surfaces of a washroom in which a washstand C is placed are constructed by placing storage space A and window space B in parallel on the right and left. A sliding vanity mirror 1 is placed between the washstand C, the storage space A, and the window space B, and can slide to the position of the storage space A and to the position of the window space B. A planter space D is provided on the indoor side of the portion between the storage space A and the window space B.