We've known for a while the shower room wasn't right. The smell of wet plaster when taking a shower is an indication all is not well on the water front! It has been a bit disheartening to take up tiles that were only laid two years ago! but at least we've found the problem and while some of the plaster board is soggy it is 'fixable' We should have taken more care to ensure the join between the wall and floor was really watertight. I think so much was going on at the time we didn't oversee the work properly. Now we have got a waterproof membrane to put down before re-tiling. Fortunately it isn't a big area to repair. All will be well!
The good bit and the bad bit - I hope you can see which is which?