We have a replica of a 1933/4 Raven Argonette caravan built a couple of years ago by a good friend of ours. The same dimensions as the original but completely scratch built.
It has a full size double bed, wooden slats fit over the two cupboards and three mattress sections pull out from the couch to make a double bed. two burner stove and sink in kitchen area, wardrobe and storage areas in side cupboards and overhead. Windows and frames were hand made.