We bought a new build so the walls were all very plain. The only room I haven't touched are the bathroom. Someone who had paid a deposit on the house before us picked the tiles etc but their mortgage never came through. I just really dislike the tiles, but can't afford to re-tile, so wondered if I could spruce up the bathroom walls with wallpaper. The floor tiles are grey, wall tiles are beige. Just not my cuppa tea. Is wallpaper a bad idea for a bathroom?