It can be done, especially when you are working night and day on a project.
I lived in a 23' AS with my brother while starting a new business in the Bay Area many years ago.
We rented a spot in a Trailer Park with full hookups. We were one of two campers in that TP. The other camper was a family of Mexicans in a little Shasta. There must have been 5 or 6 kids in that Shasta, and no bathroom. They did great. Those kids were lots of fun, and the parents were fine folks.
So, yes, with the right mindset, it can be done.