I don't have the side dinette that you speak of, but I can tell you that my 22 was comfortable enough for my wife, son and dog for about a year.
Then the Boy got too big (and active while sleeping), so we got the Overlander. Keep in mind I am 6'5" and thick too, so I had one of the couches to myself. Which meant my wife had to bunk with our son.
My layout is a couch (gaucho) in front and a gaucho on the street side (opposite the door). This set up is very comfortable. you can check my link to photos in my signature to get an idea of what I mean.
The previous owner of mine was an older couple that used it for many years and loved the layout. I think for two people a 22 is a near perfect size.
Good luck with your search