We just got back from spending 5 days, 4 nights at Country Haven campground in New Holland, PA (Lancaster County). We survived the round trip through NYC and the Cross Bronx Expressway.
The campground has about 60 full service sites with the largest being pull through sites that can accommodate the largest class A motorhomes. About 40 of the sites have wonderful overlook views of Amish farmlands.
The campground was well kept and check in was quick and easy. It's a gated campground and we were given and access card that operated the entrance gate. The main attraction of the campground is quiet. It doesn't cater to kids with respect to having a game room, pool or playground.
This would be more a place for a quiet, adult getaway and convenient location to explore Lancaster County. Having said this it was only a 45 minute drive to the PA RV show in Hersey, Hersey Park and the Hersey factory. We spend a few hours at the show and regret not having set aside more time to browse since there were hundreds of RV's of all types and sizes.