The s&s rig looks like it has stairs going to a loft upstairs and the picture showing the interior dining booth and barrel chairs looks like it was taken from the loft area.
Thats an interesting idea of the sleeping loft upstairs.
You don't need much headroom if you're lying down, maybe 24" or so, so you can sleep a lot more people with that idea.
Just crawl in, lie down and go to sleep.
"I have marveled often at the thin line that divides success from failure and the sudden turn that leads from apparently certain disaster to comparative safety." Ernest Shackleton, Antarctic Explorer, Sea and Land, 1874-1922.