For what it is - a rustic, small, free campground - it's very nice. 

Mostly I am compelled to review this because the listing says you can park at your campsite. Most of the sites are not by the parking area. They aren't overly far away, but you're definitely lugging your stuff 100-300 feet at least. 

Picnic tables, fire ring, pit toilets, and a water station are the total of the amenities. Some nearby homes sell firewood (along Hwy 63 toward Trego, or toward Hayward).

On weekend days the canoe landing, which is directly adjacent to the camping, is very busy. There's an outfitter that brings canoes/kayaks and innertubes here, and this section of the river is very popular with tubers.

IMO the best site is the one that's farthest from the parking area. It's next to the river and has a tiny landing. 

For what it is, I'd give it 5 stars. Compared to the entirety of camping options, then a 3.