We're a bit biased, but try Odetah Campground in Bozrah. Its about a
20 minute ride to mansfield. Extremely nice, clean facilities for
tents, as well as sites with full hook up and grey water. There's a
letterbox at the entrance and several nearby (I.e. Bailey's Ravine,
and really any of the bozrah and lebanon boxes).
If anyone else is coming in from out of state and needs suggestions,
email us privately and we can give you a list of camps from our very
large (i.e. puts the yellow pages to shame) campground directory!
-Steve and Heidi in CT
(No we're not affiliated with that campground, we just love it!)