Made my first visit to Ottawa Lake on a mid-March weekend. The facilities were still under their winter setup (only vault toilet, no shower available, pay in an envelope). It was a very nice campsite that I stayed at. The grounds were quiet, however there were only a handful of people staying there at the time. The sites look to have enough space between the to make you feel a little more spread out and not sitting on top of each other. It got cold (cloudless late winter nights in Wisconsin can do that), but nothing you can’t prepare for. The proximity to the Ice Age Trail is a bonus, because it made for an easy activity without much fuss. Will visit again when warmer.