Bear brook state park is a great place in central NH for camping and day trips alike. Though you definitely want to watch for black fly season and ticks (as with anywhere else around), there is something to do year round! The mountain bike trails are some of the best in NH with a little something for every skill level. There’s fishing, swimming and even archery if you’re into that. I certainly recommend, especially for the mountain biking!
Pillsbury State Park is a great place to get away from it all. There are great hikes that you can get to right from your campsite, connecting to the Monadnock-Sunapee greenway(a 48 mile trail connecting two of NHs beautiful mountains). The park also has great little ponds for exploring by kayak or canoe. Don’t expect major accommodations at the park, there are spots for campers but smaller ones, and there are a few outhouses but no bathhouse.
The location of this campground is perfect for a camping trip to see one of America’s most beautiful parks. Right outside the northern part of the park, you can easily get into the park without being right in the middle of the park where more people are. You have access to the water, the campsites are smaller but give you a great feeling of being in the woods. Showers and bathrooms are great too!
My wife and I went here for our first ever camping experience together when we started dating. We had a small tent, it ended up raining most of the trip, we got soaked. The staff at the campground were so nice, they let us change into one of their cabins. They are such a nice addition to their campground, allowing you to have more space but still be in the wilderness. Since then we’ve been back two other times and would go back in a heartbeat. The reservoir is beautiful and it’s close enough to great food and drink in town.