Established campground on north side has six sites with picnic tables and fire rings and costs $12/night. You can park and camp for free across the street but I’m not sure you’d want to sleep in your car/camper in the parking lot. There are a number of sites on the side of the road within 2-3 miles in either direction if you want to sleep in your van etc. I parked on the free side and set up a tent about 100 yards in. Lots of beautiful sites on the creek. I walked to the paid side for water and vault toilet. Arrived on a Friday in August and had no trouble grabbing a prime site.
Absolutely no cell signal. Drive about 7-10 miles in either direction to pick up a signal. Or hike to the Outlook for a very faint signal. Warren, PA is a really nice little town about 30 minutes drive and I went there for a meal and a brewery visit