I highly recommend checking out the Coos Canyon Campground. The lot spaces were decently sized, and ours had water and electricity. They have a cute little general store that you can get some supplies in, along with clean showers and restrooms. You can bring in your own wood (which I recommend) or you can buy some from the store (which was a little pricey). We spent two nights there and could have spent an entire week. The canyon itself had tons to explore including rock climbing, cliff jumping, swimming, fishing, a cute little sandy beach for the littles to play on, and so much more. We brought our bikes and had fun riding around the campground. This being our first time there, I would definitely go back!
Very friendly place with good sized sites. Located right at coos canyon. A winding rocky river gorge. Some swimming holes and spots to jump from up on the ledges. Angel falls is about a ten minute drive from here and well worth the trip. Plenty of hiking trails including tumble down mountain. And no shortage of places to fish. You can also rent some gear to go gold panning along the river.