I posted this once before but I was told it was to the wrong category. I hope this is the right place.
Last year the wife and rented a class C and pointed it towards Pa. We ended up at a place called Otter Lake Campground and Resort. We loved it!
They have about 300 sites of which about half are full-timers and the other half transient. It is beautiful. They have an indoor and outdoor pool, store, clubhouse, and many activities throughout the summer for kids of all ages. The lake has a beach area for swimming, boat rentals, fishing (no license required), and is well kept. They have many sites that have water, sewer, cable, and WiFi throughout. Also throughout the campground they have laundry and heated bath houses. The roads are paced but the sites are dirt. They also have limited RV maintenance and on-site propane.
Getting there was half the fun. 7 miles of winding road that is is 1/4 35mph and the rest at 25mph. That doesn't stop the big rigs as there were many large RV's there. If you have children ages 1-14 they will definitely like it. The older teens will enjoy the fishing and DJ's. I have another campground in Pa we loved as well. When I remember the name I'll do a review of it...lol