Passenger vans are typically made to keep the passengers comfy. I just remove the rear seats, and keep the floor/walls/ceiling intact. Never been disappointed. If the carpet is soiled, I’ll clean it, but I always put washable throw rugs over it anyway.
The seat attachment points are great for securing beds, cabinets, and more too.
Cheers!
"Be the reason someone smiles today!" ~ Van_Dweller