What can I say, I love the Michigan State Parks.  I find they are the best, Sleepy Hollow is not different and it has so many things to do.  I would advise if you want to camp there on a weekend to make reservations well in advance.  We stay here because there are only 2 campgrounds in the Lansing East Lansing Area this being one of them and the other does not have all full hook ups and charges more.  When we visit our daughter at Michigan State University this is the place we stay,  20 - 30 minutes into the University depending upon the traffic.

It has large wooded sites only electric but you can fill up the water at the dump station.  Each site has a picnic table and Fire ring.  Each campsite has a asphalt pad. They sell fire wood at the campground office. Bring what you need or you can go into St. johns to the Kroger or Walmart.  they have 2 main camping loops with 2 loops in each of the main loops and a shower restroom in each main loop.  The restrooms are very clean and kept up.  I love the showers  hot water and for me that is hot and great pressure, I could shower all day.  Sure beats our shower in the RV.

The State Park is on Ovid Lake and it is a beautiful lake, great for fishing, canoeing, paddle boards, kayak, and swimming. they have a shelter for you if you have a big party.

They also have a group campsite and a picnic area for large groups. d You can also bring your horses go to the Equestrian area and unload and get on the trail.  

You can rent canoes, kayaks, paddle boats and paddle boards.  They also have a great play ground for the kids and a fishing pier. Bring Bikes or just hike on the trails and head down to the beach.