Easiest off road camper to put up

I have appreciated all the replies, and the Vista RV meets my requirements. No frames to assemble and just open it up with the shoulder. Just looking for a camper "just in case". Would love to do the Strezleki Track all the way with cabins ie at the start at Lyndhurst, at Innaminka, all the back way to Tiboburra. Also Oodnadatta track staying at William Creek and Oodnadatta. This is a back-up (ie when rain delays part of the trip) and just using it as a bed in a caravan park. Expensive yes but a bit past tenting it on the ground. Trouble with my shoulder so don't want the stretching effort in the frames. Will be towing it with a SZ2 Territory. Just can't find anywhere in Adelaide to hire Vista, and don't want to drive to Victoria to pick one up at $200 a night.

Most hard floor campers such as Cub would be simplest to set up - in its simplest form fold out and it is ready - no poles or other setup. If you need awnings or annexes well then poles are needed but basic setup just happens.