Airstream Basecamp 20

As with the other airstream models, the Airstream Basecamp 20 would sleep 4 but only if you are very cozy. The front bed is tiny, 26 x 78. Unlike the Bambi which has a fixed bed, the Basecamp has a convertible dinette/back bed which is huge when used as full sized - 82 x 78. You could easily sleep 3 in this bed unless one of your kids is a kicker (ahm, Isaac!). This is worth a look if your tow vehicle can tow up to 5000 lbs.