I haven't been there either, but I just wanted to let you know that there are 2 different campgrounds called Terrace Lakes. The one Meterman directed you to is in Sullivan, OH west of Akron. The one in New Waterford is closer to Youngstown (a little to the south). If you are looking at the one in Sullivan, I can tell you I have spent a weekend at one nearby (8 miles away) called Clare-Mar Lakes (http://www.claremar.com/). It was clean, large level sites, with 2 lakes, although most sites were seasonals. We were there as guests of a seasonal camper. They have a lot of planned activities and evening entertainment. The seasonals were very friendly.
Here's some info on the one in New Waterford: http://www.ohiocamper.com/terracelakescamping.htm
It's about 30 miles from where I live -I can tell you there are not a lot of "touristy" things in the area.