A shower device level with a surrounding floor includes a surface for recovering waste water combined with an element for draining the water. The recovery surface includes a tub embedded in the floor, whose peripheral edge, over all or part of its periphery, is essentially flush with the floor, and a detachable support element, forming the shower floor, essentially at a level with the surrounding floor, in an operative position, so as to form a surface continuity between the latter and the detachable support element. The peripheral edge of the tub includes a preferably flat seat surface, and the tub is supported in a recess of the floor at least by the seat surface that rests on a belt of the recess at a level below that of the surrounding floor, and the seat surface extends by a raised surface whose upper edge is essentially flush with the surrounding floor.