Recently a soap holder fell off my bathroom wall. I never used it so I am not concerned about replacing it. It was stuck to the tile using tile adhesive and screws (which are now rusted beyond use). The only option I can see to clean this tile up is to remove it and replace it.
However, I think that the tiles were layed on top of existing tiles by the previous house owner. I have looked into methods of removing tiles from walls but am a bit concerned about not damaging the underlying surface. Is there anything I can do to minimise the impact to the previous tiles?