Formerly known as Sanidumps.
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RV Park

Waterloo / Lost Island Koa Resort

4.3(840 reviews)
4550 Laporte Rd, Waterloo, Iowa, 50701, United States
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Amenities & Services

No amenity information available.

Reviews

4.3

Based on 840 reviews

JO
Oct 8, 2025

We never stayed here but made a reservation. Within hours of making the reservation I realized I booked at the wrong location. I immediately called them and canceled my reservation and was told my credit card charge will be reimbursed. Well that was not the case and I was charged and never received credit. When I disputed the charge, my credit card company told me that this KOA is disputing my dispute. So here we are. I hope that this 1 star review gets some attention and if not, I hope that their efforts to not give me back my money is worth this review.

JA
Sep 11, 2025

Great campground! Roomy sites. Pond with geese and very relaxing. Cute beach and swim area. (Those that complain about the pond...it's a pond, not a pool.) Cute cabins. Very quiet and welcoming. Gas and diesel on site!

KH
Sep 1, 2025

I am only giving this 1 star because 0 is not an option. We have been staying at this campground for 10 years and it has steadily gone downhill every year due to poor management. The swimming area used to have an accessible island that the kids loved to explore, which is now so overgrown that you're barely able to see the roof of the pavilion. The "beach" has more algae than water & more goose poop than sand. Restroom facilities are disgusting. I have never been more disrespected by management. We tried to resolve an issue and were told "their staff doesn't make mistakes" and basically called liars. We have continued hoping that we could stick it out until new management, but unfortunately, we will never be back. The KOA name is the only thing keeping this campground from closing. It is more empty every year, and 30+ open campsites on a holiday weekend speaks for itself.

AP

This was a 5 day stay while in Waterloo for a family event. We are in a B camper, so wanted to use the showers and rest room. They were disgusting. The exact same clump of hair remained in the shower stall for 6 days even though I went to management and asked for the rest room to be cleaned. The sinks were dirty, all around nasty conditions that did not change much for the 6 days we were there. No toilet paper in the men's room the first day. Clearly they are not cleaned every day. In addition, the "swimming beach" was an algae rimmed joke. I would have been better off staying in the relative's driveway and saving my money.

JM
Aug 18, 2025

Nice, clean place to stay if your visiting the Waterpark or amusement park but people constantly were speed through the campground to the point we wouldn't let the kids ride their bikes and when we went to the Waterpark we waiting 45min past the shuttle pickup time and when we called, they said the driver didn't feel like doing his job. We were stunned by that response and ended up having to call a family member for a ride. A few speed bumps and some better management and this would be a great place to stay.

Includes reviews from Google

Hours

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