what type of tiles was used on this bathroom
painting over tiles will ALWAYS look like you painted over the tiles. Not worth it in my opinion.
Although this is not a permanent bathroom fix, if you want to extend the life of your ceramic bathroom tile for a few years, then painting ceramic bathroom tiles is definitely an option.
1. clean, clean, clean
clean the tile thoroughly before starting. Make sure that you get all of the soap scum, grime, lime scale, etc. off of the tiles and grout.
2. Let dry, and then sand the tiles with a medium grit sandpaper until they are dull and no longer glossy. Make sure that you clean up all of the excess dust with
re-grout your tiles you may want to do that first. If you grout after it can ruin your newly painted tiles.
4. Coat the tile surface with a bonding primer to seal it against moisture and everything that goes with it (mold, etc.)
5. Let dry according to the directions, sand the primer, clean, and then prime