With temperatures over 100 degrees we were sweltering in Belgrade so we found Hotel Izvor's Water Park for our 3 kids 10, 6, and 2. The entrance price was approximately 20 dollars for our entire family for the day and we found all of the slides, children's pool, etc. to be the perfect entertainment. IN addition, the food was fresh and tasty. The biggest selling point to me was that it was clean. I could see the bottom of the pools and my children were also happy with the staff who they interacted with. Parking is free.