There is a beautiful campground right on Hardwood Lake called the Hardwood Lake Campground owned by Richland Township Says Dawn Johnson
If you wanna get out on the water, Eagle Bay Marina is in close proximity. Don't leave Hardwood Lake without visiting Huron National Forest; dry warm beds await you at Super 8 West Branch. This lake is so wonderful. Since you might be in a lake visiting mood you can always check out close by Cranberry Lake. Logan
Hills Campground is a nice local campground, and if you need a location to stay Quality Inn West Branch is a good choice. Why not camp at Troll Landing Campground since you're here at Hardwood Lake.