Hi J.,
Sorry if this posts twice; I had trouble with my system.
We were in a similar situation trying to find a place to go. I spent alot of time looking up campgrounds in NH and reading reviews. Finally, it was down to two places and both happened to have reps at the camping & rv show in Providence a couple of months ago. We made a point of going to the show and after speaking to one rep (the other had gone by the time we got there), we chose his campground. It's called Goose Hollow Camp & RV Park in Thornton NH (near Campton).
The owner, George was very nice and has put alot of work into the campground he said. As it turns out, an old friend of mine used to stay there years ago and had very positive things to say. It's family oriented and simple, not alot of fuss and fanfare and we found the prices for tent camping to be very affordable.
Their website is: www.nhcampgrounds.com
Good luck and have fun!
P.