In July we took our new camper to Glimmerglass State Park. This was our 2nd time at the park. It is clean great bathroom and showers. Very friendly campers and plenty to do at camp grounds and around the area.
Sites are very easy to get into and well maintained. Water available and electric. The lake is pristine and wonderful to swim in. Nice beach. Also a place for showers and a bathroom and small place for food and extras things you might need for camping. Trails for walking.
With Cooperstown 15-20 minutes away no lack of things to do for adults and kids. Great restaurants also. No reason to ever get bored.
I will be back.