This can be done with the Liberty floorplan on either a 16 or 17.
The beds stay 'down' AND you have a dinette.
A board was added to get to a 30" width for each bed (x 80" long). The boards hinge up for access to the storage. By using the rear dinette the feet don't dangle (in a 16). Or we set up the small table top at the front position so darling wife may have more 'counter space' while cooking.
Have more floor space.
Don't have to 'crawl over' when sleeping (well, NOT sleeping).
One piece foam bed, no seams or gaps.
Either side can be turned into a lounger with a stack of pillows.
We sometimes carry an ice chest at the back and it doubles as a night stand.
Cost about $25. plus the bed cushions. We had some old foam which we covered with 1-1/2" thick dacron upholstery fill and sewed up a sheet ($3.00 x 2) for a cover (comes off for washing).