I had never heard of this park before reserving it, but seriously loved it. It's only about 90 minutes from Seattle. We spent 1 night in spot 16 and the sites are all gorgeous with lots of vegetation between sites. The facilities were all nice and modern and there were trails going right off the campground loop that connected to the main trail network. 

We brought our dog for his first camping trip. He wasn't a huge fan of the gunshots that we heard all afternoon coming from a neighboring property, but around evening they eventually stopped and he was able to relax. We will definitely return!