NIce alternative to NPS Fairholme
We stayed here while biking the ODT, since the NPS Fairholme campground was full, and we're glad we did. It's right on the ODT; the campsites are scattered among the trees; and the toilet, shower and kitchen facilities are pretty nice. There are also lots of benches and tables. George, who was managing it, was very helpful. The place is filled with carvings of mushrooms and forest animals that give it a hobbit-like air.
The only things to bear in mind are that it's almost always in shadow (deep forest), and campsites up to number 3 are up a steep hill from the main facilities, so they would not be good for people with mobility problems.
We stayed in 1b (the most isolated and farthest from highway 101), and never heard any traffic noise,.
If I did the ODT again, I'd definitely stay here.