Lake Martin is beautiful and there are many places to camp along it. This is the only state park along the lake and the campground closest to town (with grocery, restaurants, etc.). There are nice hiking and horseback riding trails through the woods, swimming beaches, a marina, a little cafe with boat rentals. Lots to do for all ages, from sitting watching the water to riding bikes through the roads. There are many loops to choose from but less than 25% of them are along the water. There are some furnished cabins also. Simple place to camp but quite nice.
Yay: Love the lake and boating around it.
Nay: Sites are a little crowded but there are some trees to improve privacy. Campground feels a little crowded.
Surprise: Check out Pineywood Island, kids will love to run around and entire little island.