This place is great if you plan to spend most of your time on the river, or trails, but not so much on at your site.  The lots for most tents/trailers and RVs are pretty close together, not a ton of privacy.

On the plus side the river is beautiful, mostly slow, and shallow, and pretty clear.  BUT BRING A LIFE JACKET, accidents happen all the time on this river and I wouldn't put my kids in with out a life jacket. 

There are some cool yurts, cabins and platforms for tents on the other side of the river and plenty of hiking. Trails go along the water, and up into the woods behind the campground.  As of now it is clear cut once you get over the ridge.  This is sad in one breath, but gorgeous in very next.  There is wildlife in the area so come prepared (black bears, bobcats, coyotes). 

Overall a great place, but like most western Washington campgrounds it's better in good weather by a significant margin.  It may flood in the winter, and when it's rainy it's pretty soggy.

Carnation is a neat small town that the park is at the very edge of.  Plenty of options for groceries and laundry.