The bed was built especially by our hanyman to take a double bed sized, good back bed mattress. Underneath is space for flat plastic storage bins, and at the end we have an Engels fridge and a 3 foot high plastic cupboard with ambulance doors for the food.
When we sleep, the things that are on the bed during the trip go on the front seat, and the dog crate goes on the other front seat.
Plenty of room for all three of us!