Ours, also, has the air bed (a cloth sofa, not pleather.) We've only used it once but had no issues with is...inflates/deflates super-fast with the built-in electric pump.
I'm surprised yours does not have the mattress....ask your dealer if it was supposed to have one and, if so, get one from Forest River for you. (Or take it off an RV in the lot, which is probably what happened to yours if it was supposed to have it!)
Rick & Karen
(Retired USAF, MSgt)
8-year Travel Trailer RVers
2013 Forest River Rockwood Ultra-Lite 2904SS
2014 Toyota Tundra Maxcrew SR-5 TRD 4x4 (with Firestone airbags in the rear)