I saw a lot of people who reviewed this place poorly. I don't see why. We came here Friday and Saturday night during Labor Day weekend for a music festival and The Underground and were greeted with friendly, accommodating staff. Although apparently my friends reservation didn't go through (probably a fault with the browser she used) the staff still got us a campsite we booked anyways (Primitive w/ Electricity & Water) and were empathetic to our situation, because we were thrown through the loop about the reservation not going through.
Out campsite was dry and clean (even when it rained Friday night and most of Saturday night) it was hardly as 'flooded' as people have mentioned.
The bathrooms were adequate and acceptable for a camping area. I wouldn't expect a place where 50-75 people use the same facilities to be spotless and pristine at all times, it's just not an acceptable position.
The train did go by often at night and during the day the planes were launching and landing at the airport next door, but they were hardly that depriving us of sleep.
Us not having kids, the kids around were annoying, but again, hardly something we didn't expect it's national holiday weekend.
By far the worst part about this place was that they were sold out of bug spray (our fault for not planning ahead) but the Manager went into the staff shed and gave us a 1/4 bottle of their bug spray that was left for free. It was a nice gesture.
We had people partying throughout the night past the 11:00 PM "quiet time" but none of them were being obnoxious or condescending just friend enjoying alcohol, each others company, and the outdoors.
We had a great experience at KOA in Sandusky and would suggest to the reviewers to have more realistic expectations of the places they are going. If you want Hilton service don't go to a camp ground next to an airport.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.