Not quite a wet bath, but close. Our composting toilet was built over the rear wheel hub, with a step in front of it. To get to that, you have to walk through the shower space. But when we shower, we have another shower curtain we put up between the shower and the toilet, at the back of the step. Our CT is a 4-gallon bucket and by the time the cover material ("Dry Den" horse bedding pellets, we do not have a urine diverter due to time contstraints on our build and now we have decided we don't need it due to the small size of the bucket) has absorbed and expanded we're changing it out every other day or so. As such, we've not had any problems with the extra humidity from the shower.
Unfortunately, our RV spot is on a slight slope so the water from the shower and washing machine (I have it drain into the shower) pool in a corner so I'm constantly squeegeeing it out but that's a minor issue. (Had we known, we may have put the drain in the corner instead of the center!