To provide a bathroom which can bring about a fantastic atmosphere by light therein by radiation light from the surface of bath water, especially, securely prevent spot light from leaking outside the bathtub to raise direction effect.

This bathroom is equipped with side walls and ceiling walls and a bathtub equipped with a spot light device which can radiate light from the inside of the bathtub through the surface of water to the inside of the bathroom. The spot light device is placed on the bottom wall or a side wall in the bathtub. A side wall formed in between upper and lower seat faces of a half body bathtub can be used as the side wall. The spot light is placed near the drain port on the bottom wall of the bathtub.