We have a 69 - Globe Trotter with a wet bath.
Likes and dislikes - I guess everyone is different - depending on the dailly bathroom rituals - size could be a real issue for some.
We manage pretty well - and on our last 2 week trip we finally had our water heater hooked up and working so we could take advantage of private showers. Works great - and two fold - you will always have a tidy and clean bathroom. And since it is not very big you will not get into the habit of storing everything but the kitchen sink in your bathroom.
We make it a point not to clutter the floor while traveling - there is nothing like using your own Bathroom - rather the the gas station or even rest station sometimes.
Like Pepper 48 we have the stopper drain plug - original that stops water from coming into the shower pan. This does allow the water to back up the drainage pipes and eventually will come to the sink level - acts as a back-up wash water storage untill you can drain it. You can get two types of caps for the outside drain. We use the one with the hose attachement screw lid - psst don't tell anyone - but we leave that a little loose while we drive so that the dishwater can drain out.
Our Black tank drains out the same drain - so one thing we have learned is on our last shower before breaking camp - is we leave the plug in and fill up the shower pan. Dump the black tank first - then we empty the shower pan to clean out the dump vavle - or if no showers are needed we replace the cap and pour some soapy water down the kitchen sink - make sure the plug is in the shower drain - and at our next stop we would let the the grey water out into the next hookup or into the blue buggy (note this is the water that could have some trace black water and not very responsible to let drain out on the road or even a parking lot). The only draw back we see with have the same main drain for both on the vintage.
If we keep the GT in the future - we will consider installing separate main drains.
For a floor mat we use one of those foam squares that can hook up to make a large area - okay so ours is colour coded too - we have a blue or a yellow one - they can get wet - save the scratches and are nice on the feet.
There is plenty of room to do your thing in the bathroom - my only problem is the replacement new toilet is just a little higher and my feet dangle hmmmmtoomuchinfo
Good luck - happy camping and remember you only spend a tiny % in the Lue
I have lots of pics of our "Head" if you need them - just pm me too or check out our photo gallery