Stay with me here folks

My wife isn't quite ready to camp somewhere without toilets and showers so we've always been places with facilities.
So I'm looking at options to change that ... Obviously it involves a porta loo, 12V shower and hot water.
I got to thinking ... Rather than muck around with pop up ensuites etc what about using a compact gazebo? The 2.4m x 2.4m one would sit nicely adjacent to the drawbar side door (back door) of our camper. 3x wall kits, portaloo in one corner, shower in the other hung off the frame off the gazebo, and bucket of warm water to draw from ...
Gives plenty of "private" space and easy to setup. Thoughts?
Only issue is maybe how to stop the ground in it getting muddy etc where the shower is.
We have water tank on the camper so that's not an issue.