Perhaps perversely, I really like two little airports in California: ACV and BFL.
ACV is a funky old terminal, built out of native redwood. Little restaurant on the second floor with suprisingly decent food. Basically one gate for departure and one gate for arrival. Only United Express and Horizons fly there commercially. A very nice and new Holiday Inn Express adjacent to the airport.
BFL is also kind of funky. Double the gates of ACV (

) You can walk off of the plane and out the fence to the adjacent 60's era airport motel, which is cheap and serviceable. Biggest beef is with the OLD x-ray machines which cause the line to back up.
As I say, perverse maybe (but then I even liked the old ONT terminal)
Another small airport in Oregon that is nice and compact is EUG. Seems to be pretty new. And you can get a really, really good bowl of seafood chowder for cheap.