Bathroom.
I would suggest taking all of the wallpaper off the walls and painting them with some good semi-gloss paint.
Take the tiles all up, clean the floor really well, you may need to sand it, and whether it is regular flooring or plywood underneath the tiles, stain the wood a color that you like, then use marine spar varnish, giving it a couple of coats.
Add a couple of throw rugs and a bathmat, and it will feel like a new room.
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