This is intended as a hidden doorway, but it's a reasonable way to design closet doors. That's because you're not expecting furniture to be placed in front a closet door. So, adding shelving makes use of that otherwise dead space.
Not a bad tile layout scheme if we have to use more than just a x tile. Create a modern looking bathroom by mixing different shapes of floor tiles, walls tiles & mosaic bathroom tiles in the same colour. Shown here: Zenith Cinza