We thought we'd give Holly Recreation Area a try. Campground is in "loops", each fairly apart from each other. The closest "lake" was mostly lillypads and scum. No swimming there, but the lake with the beach (and overpriced lake inflatables, $20 for 60 minutes use!) was a drive (or looong walk) from my site. (We're in the Oak Loop).
Playground equipment leaves much to be desired. Old swings and slide here, down a ways it's a climbing dome and some other metal thing. I don't know what genius thought putting a basketball court right next to a camping area was a good idea, but the constant "blap blap blap" sound got tedious real quick. Speed limit is 10mph, people seem to add 10 to that, so watch the kiddos. I even saw an official State van zip by my site at at least 15 to 20mph. Not great.
Every site is paved, which is nice, but I've never seen SO many unlevel sites. Some slope back, some forward, or to the side. I mean virtually every site in this loop is unlevel. I'm not exaggerating in the least. Hard to believe they thought this was OK. I drove each loop, noting the level ones, which was only a handful total.
We're close enough that we should get all the Detroit TV stations, yet I can get none. T-Mobile only gets LTE, which is slow.
Vault toilets in the loops, modern restrooms/shower out on the main park road. Unless you like long walks, expect to bike or drive to them. The modern facility near me was ok, showers ok, but there were lots of spiders in the stall I used. What's a lot? I counted 15 on the walls. It IS camping though, so kind of expected.
It is pretty though, very wooded, but sites clear & well spaced. (though, again, mostly all unlevel to some degree.) Road and site pavement is in good condition, and sites clearly marked.
I doubt we'll return here.