Wonder if it's much work to move water pipes and have faucets mounted on the wall... Probably easier to keep them clean without water pooling at their bases. (Although, I don't like this particular faucet design... Looks like a dong lol!!!)
Powder room with black and white Art Deco wallpaper, wall mount sink, brass is a lovely accent but I'm not so sure it's for me. A statement wallpaper isn't any good, though, without something like the brass to draw the eye out of dizziness.