Is it juts a fashion or modern paints are so good that can replace tiles?
One plumber told us that we only need tiles around the bathtub.
Today we saw a friend's bathroom where all walls were tiles just half-way, about 1 meter from the floor. The rest, even around the bathtub was painted.
I would prefer fully tiles walls as they are easier to clean but my OH hopes to save money if we use paint instead of tiles.