Beautiful campground in a nice central location nearby several nice towns in Central Massachusetts. The hiking is some of the best I have seen from a campground in the area, with a huge system of trails which are all very well marked. These trails vary greatly in terms of difficulty, a few of the trails are doable in less than 15 minutes if you maintain a quick pace. The harder trails, including the one going up to Carpenter's Rocks are more strenuous and feature a good amount of elevation gain, rocky terrain, and very worthwhile views for the trouble.
Not usually too busy on the trails, though expect hordes of people at the parking lot especially during the warmer months. Firewood is easily available, if a bit pricey, and the tent sites are generously sized with plenty of room for multiple shelters. Have spotted beavers deep into some of the water-adjacent trails, as well as many species of birds.
Definitely give this one a try if you're in the area. Rental fees for the tent sites are very reasonable, and it's worthwhile to come for the trails and views alone.