I have a center bath 31' Sovereign
. I've removed all the living area built-ins and the twin rear bed built-ins. I'm leaning towards free standing furniture in the living area with no table at first. Probably a sleeper sofa and a recliner. I'll make built-ins as needed. For the sleeping area I plan to install one standard double size bed on a storage pedestal. I'll make a set in, lift off, bedside table to cover the water shutoff.
I'm leaving the bathroom alone. Everything's good and working. I think I'll initially leave the closet wall and the refrigerator side cabinets as they are. Everything works and is in decent shape. I don't have much to gain by moving that stuff.
There's way more storage in this thing than I need. I'm a motorcycle camper. I've taken three week trips with just my riding gear, one extra pair of jeans, 4 extra t-shirts, and a week's worth of socks and silk boxers. I don't call Airstreaming "camping", not by a long shot.