Excellent car rental office, reasonable prices, insurance included, most cars can be driven outside Serbia, the cars themselves are quite fresh, not killed
There are very nice managers in the office, they speak English, but the best is the uncle-receptionist, who speaks Russian very well and tells everything you need to know, starting from the car itself and ending with the nuances of paid parking in Belgrade
Low prices, it is possible to pick up / hand over the car before 22 o'clock, you can deposit both by credit card and in cash. You can travel abroad by car.
Excellent rental service! They provided a car very quickly, accepted cash as collateral, and at the end of the trip they took the car from the airport. I highly recommend it!