Good Morning @diy_vvv
Now this is a harder one the you would expect 😕
As soon as you start cutting into the grout to remove the tile you are putting a hole into your waterproofing and all the associated problems that can come from that. However having something on the wall thats going to cause head knocks/catches or just be a pain is also not great.
Removing the tile without damaging the board behind and the surrounding wall....
Hesitating as I can see a larger issue being created 😕 by cracking the surrounding tiles or damaging the waterproofing membrane.
Using a sharp knife, score the grout out from between the tiles, try not to cut too deep but you probarlly will.
The next part is going to be time consuming, you need to somehow remove the tile /soapdish without using too much force. Id suggest to remove the small tile first, maybe even tapping the tile with a pointed hammer or center pop so it cracks (after you have removed the grout from the edges) Then gradually remove the cracke pieces by levering with a small hard flat head screw driver. Once the small tile has been removed then id use a fine hacksaw blade (width wise more so then teeth wise) and gradually work it up under the soap dish sawing as you go. Patience is what this step will be. The more patient the less chance of damaging the surround wall more so.
Safety specs are a must, thicker gloves also as you will be handling broken tiles and believe me they are sharp!
Dave
