Based on a force 3050 WB this caravan come lounger easily sleeps 2 on board.

 Amenities :

• Recliner & Swivel chairs that convert into a sleeping area for 2
• Drop down cab over bed that sleeps 2 
• Pneumatic activating valve based washroom : with a basin, commode and shower with hot & cold water supply
• Kitchen : burner, sink, microwave, 12/24 VDC fridge

If you are dubious about getting one built, you can also rent this or similar model and get the gist of caravanning, experience your own Motorhome Adventures