Tumalo State Campground is a little gem located between Bend and Sisters OR. If you are into "roughing it", this probably isn't the place for you.
Tumalo is clean, small, and during my visit, attended to by some folks who appear to be professional camp hosts - they had they're own wooden sign. This place has paved access to a decent number of back-in sites, all of which were very neat & tidy.
The real gem of Tumalo is the bath & shower facilities: They are extremely nice, clean, with the showers being fully self-contained private rooms - with HEAT LAMPS! Even my kids who are pretty picky about the whole concept of "public bathing" and whatnot, found Tumalo to be downright welcoming in this area.
Hands down, Tumalo is easily the nicest state campground I have ever been in, and it even gives some of the "resort" campgrounds I've visited a run for their money. There is firewood & ice for sale as well.
Note: My kids knock Tumalo a point for "No Internet!" - but really, did you go camping to spend all your time doing what you can do at home? No, you did not.