The campground at Gifford Woods State Park is a hiker's campground for sure. The sites are large, private, and wooded, and there are clean restrooms with hot showers. The highlight is the hiking, both in the park and just outside of it.
The Appalachian Trail runs right through the park and you can hike up to Deer Leep, around Kent Pond, or to Thundering Falls right from the campground. Nearby hikes include the Bucklin Trail to the top of Killington, Sherburne Pass to Pico Peak, and Canty Trail to Blue Ridge Mountain. So many choices!
We stayed in the Elm lean-to, which sits up on a wooded hill. The only down side is that the lean-to opening faces the road instead of the woods, which would have been better for privacy. A minor issue, though.
Apple and Hemlock are awesome lean-tos if you can get them!