Just got back from 3 days at Father Hennepin. If it`s hiking you`re looking for, this is not the park for you. I covered the entire park my first afternoon. Much better hiking can be found at nearby Mille Lacs Kathio State Park, about 5-8 miles away. That being said, the park is well cared for, has a good beach if lake swimming is your thing, sand volleyball, swings and such, fishing pier and 2 boat launches. In my opinion, this is place is mostly for families with kids, which I am not, so it wasn`t my favorite. But if you`re looking for a manageable state park with things to keep the kids from screaming, this could fit for you.
I stayed at Maple Grove campground. It`s a bit more rustic than Lakeview, with reminded me of a field with RVs strewn about. I`m a tent camper and enjoy more privacy. Maple Grove sites offer some privacy, but there`s not much understory to speak of so you can see and hear your neighbors pretty easily. All-in-all, this park is fine, but not one I would visit again.