I've seen these in kitchen, but not in bathrooms, and they're really well suited to hiding away multiple bathroom products in a slim space (which are much less heavy than pantry items which can make these shelving units a bit clunky). Decor, Hidden Storage, Spaces, Bathroom Storage, Bathroom Ideas, Bathroomstorage, House, Storage Ideas, Design
Also on these boards
Cabinets. This is great! Hidden storage is always appealing. Any style could be worked for this and can be done at the tub as here in this picture, or in a small space in a bathroom. I can see it working similarly in a kitchen also.