this would actually be a really fun idea to bring light into the space. a ladder could go against the wall where the metal desk is now with string lights. it would be nice to see walking into the room from the hallway
I've seen a lot of clawfoot tubs with subway tile accent wall(s). Some clawfoot tubs are painted black. Maybe the grey tile floor, white subway tile, black outside the tub? too much tile? too much white?