Not secluded, but beautiful lake
The pros:
-very responsive, kind hosts
-beautiful property, peaceful and quiet
This place was really nice, and it might be what you're looking for, but just to be clear this isn't really a "campsite." You're parking in someone's driveway, essentially, on a quiet street with other houses. The lake behind their house is really nice, but it's surrounded by houses and docks. If you're looking for something secluded, this isn't secluded, but it would be a great place to enjoy the lake if you don't mind other people around.