This was one of a group of CBS rural comedies popular in the 1960's that were actually grouped together as far as having interdependent casts - "The Beverly Hillbillies" and "Green Acres" being the other two series.
The show is about life at the rural Shady Rest Hotel, owned and operated by widow Kate Bradley (Bea Benaderet). Action centers around guests at the hotel as well as Kate's three attractive daughters, Betty Jo, Bobbie Jo, and Billie Jo. The actresses portraying Billie Jo and Bobbie Jo changed over the years. In fact, season two is the last of two seasons for the first actresses to portray these roles. Betty Jo, the youngest and the tomboy, was played by Linda Henning, daughter of the series creator Paul Henning, for the entire run of the series.
The hotel is literally in the middle of nowhere, halfway between two very small towns. The actual location (state for example) is never given, and the issue of how exactly it is that Kate manages to make what seems to be quite an adequate living running a hotel that theoretically should have few if any guests is never even addressed. This is a show very much rooted in the early 60's, and the idea is escapism and fun, not realism.
