There's a tough crowd here, lol. There's a queen size bed inside and a galley, with sink (2.5 gallons of water storage) off the back. I'm 6'3" and fit just fine. It stays packed with all our camping gear and extra shelters (canopies, tarps, and screen houses) to match the environment.
This was the solution to a lot of barriers my wife had to camping more. She didn't like setting up camp in the dark and that is when we normally arrives at our site. She didn't like the packing, unpacking and repacking gear, in the car ,multiple times in one trip.
Her wants were: a food prep area that was familiar no matter where we were. A secure sleeping area. Something economical. Lastly the living space needed to be outside, no cooking inside and no common area to keep us inside.