Wisconsin's youngest state park is a true gem - perfectly undeveloped for the person wanting to get (mostly) away. It is not too far from Luck and other towns, while still getting cell phone service (on Verizon as of May 2020). You need a state park sticker to visit, which is now available to buy online. In my pictures here I have uploaded images of the walk in camp sites. There are 10 of them and have picnic tables and fire rings. Several of these sites are near ponds and will probably be super buggy (though, it had just heavily rained before we were up there). I would suggest staying at sites closer to the lake if possible to avoid mosquitoes (as much as one can). No sites are right on the lake.
There is a canoe launch as well that is very sandy (my dog loved swimming here) and also a little picnic ground that was a little grown over.
The walking trails are nice and well maintained - they also intersect with the Ice Age Trail. There is a map at the entrance. We enjoyed the Rainbow Loop which was very easy and nice. Lots of people kayaking and swimming there when we visited.