we had a truck camper for a long time when we pulled our boat. wet bath.
it was fine. a bit annoying cause I did wipe up/dry off the toilet etc. a little, then threw on the fan. overall we did not mind it cause when one wants a shower in the middle of nowhere, too cold outside, it is a nice thing to have :)
ours was mildew free and didn't have any problems with it being a wet bath ever.
it is tight. those baths are very small but something like shaving can be accomplished. all can be handled but in a smaller package.
would I get another with a wet bath. No. I did it before, it was fine, but at this point I don't want to handle that again.