We've been here both in summer and winter, and the winter months is by far better in our opinion. Summers are too hot, when you have the coast and the town of Brookings so close. But in the winter! We love this park. It was peaceful, the Chetco River is just gorgeous, lots of rain but if you're ok with that then this park is amazing in the winter.
There's a cool hiking trail right from the day use area / boat ramp area that takes you to this other amazing Redwoods hiking trail up the road.
The cabins all face the river and are really nice and cozy. The sites are nice and clean and mostly all level, and the volunteers and rangers do a great job of keeping the park sparkling. Showers are nice and hot and free, and bathrooms are clean.
Good enough service, not bad for ATT and Verizon.