I converted the sleeper of our 2001 Century class Condo. We removed all of the bins and the wall coverings. I mounted 2 fold down sofas and had some cabinets made and I installed an a/c heat unit under one of the couches. I plumbed the a/c up to the existing vents in the sleeper at the top of each side and one down thru the front base behind the passenger seat. We had the old material that was on the walls recovered to match the rest of the unit. We found that we needed the extra a/c and heat for the sleeper section while parked. I insulated all of it but there was no real air flow from the camper area.
aome pictures are at the following website :Wick's conversion