Attached is a picture of the dinette in our 28' Argosy. I rescued this from a 1975 26' Argosy that was being gutted and modernized, I also acquired some wall panels, used those to replace de-laminated and water damaged dinette panels and had the seat cushions remade with new foam and upholstery. I have the original above the floor water tank and the dinette is boxed out to cover that, so reduced legroom at the front wall.
It comes to the middle of the window which would be the side of the door in a 26' and the opposite side is the same length. The shorter length leaves enough wall for the fire extinguisher by the door. The black dot is a
12v outlet. I have seen an original 28' with the opposite side sofa extending all the way to the kitchen counter.