I bought one (just the loco) at a sale for $10 for my daughter. I bought some old time passenger cars to run with it. The motor would get very hot, so I replaced it. I even converted it to DCC.
I read that the Shady Rest Hotel was based on a real hotel that was owned by the show’s creator, Paul Henning’s wife’s grandmother. That hotel was in Eldon Missouri along the Rock Island RR. Which I think is in southwest Missouri.
I heard that at one time they even toyed with the idea of calling it “Little Hotel In The Ozarks” but changed their mind and went with Pettycoat Junction.
If you remember the Beverly Hillbillies and Green Acres were all connected and when Granny talked about going home it was to the hills of Tennessee so take your pick.