This could work in a tiny bathroom. Love the tiled floor/painted wall combo and the fact that the tiles in the shower match the wall colour but are different from the floor. The niche for storage works well for us too.
Idea for the en-suite. Like the built-in storage between the shower and wash basin. Also the use of different tiles to define the shower room. Don't like so much the block under the sink would prefer a unit /cabinet to store towels