Suggest an update Name* Categories* State* Locality* ZIP* Street address* Phone* Website* Company description* Visit the hotel Waterloo / Lost Island Waterpark KOA, which is in the state Iowa (IA), city Waterloo. Our hotel can be found at 4550 Hess Rd, Waterloo, IA 50701-9473. Great deals on best and cheap hotels. Your comments* (not for publishing) * — Required information Waterloo / Lost Island Waterpark KOA/4550 Hess Rd - Waterloo - Iowa (IA) ← View details 4550 Hess Rd, Waterloo, IA 50701-9473, Waterloo, Iowa (IA) Not available