Got upgraded to a larger car without additional charges.

My returning flight was at 7am and when OK rent a Car did not give me a choice to drop the car keys before 7am. I end up asking a friend to return the car keys so I wouldn't loose my flight. This is first time that I heard of a rental car company with an office in an airport that will not allow the car to be returned after business hours. I would not use this company again

Unexpected and unannounced fees of €50 due to arrival at 10:30 pm !!

It just feels like a very dishonest company. There is basically no way to really know how much the rental will cost beforehand. Even when one book from full to empty, we have to fill up to avoid fees. I am not even mentioning the insurance scam here. No use for prebooking insurance. You will have to take the Ok rent a car insurance if you don't want your experience to be horrible. Will never do business with them again. On the day of return, no one was there. We had to call some non obvious number to have service and assure us that someone will come take care of us and bring us to the airport. In addition, it was not clear at all at the time of booking that the company was not directly at the airport but somewhere else.