towel rods on the back of the door- great idea for a space saver. Just need to make sure there's a door stop so they don't hit the wall :) was thinking of wallpaper on the back of the door behind the towel rack
INTERIOR AMMM by architecture, via Behance - Narrow vanity alongside the tub. This is what we have only our sink is centered (way too close to the toilet). I was having trouble finding images of off center sinks in this configuration.