One of two in a top floor flat in a four-storey old building. It will have to be completely gutted down to the brickwork, new floor seal, new plumbing, new everything! It was last updated 20 years ago, with the exception of the commode, which is fairly new. We also plan to shift the door from the end, entrance from passage, to middle of long wall, entrance from bedroom. This gives us the chance to put in a longer vanity. The position of the commode and shower cannot be changed. We plan to reuse the commode, if it comes off the wall intact, and the shower glass. The window is tiny and will be enlarged, beams and columns permitting. Even then it will be dark as it is covered by a cement grille. Not having an architect's plan of the house we won't know just where the main supports are till we get the tiles off, though I could make an educated guess. The main user will be a teenager, but the room may be used as a guest room so bathroom cannot be too aggressively teen, no matter how much she wants it. I told her that bathrooms should last at least ten years, so consider a stye you won't get tired of. Genderless preferably, and not too dated. What I need most are suggestions for a genderless, non-dating bathroom that will make the most of available light.