Everything went smoothly with the rental and return. There are two issues to note: 1. The map indication for the Budget rental location in Madrid is incorrect. There is no rental point in the city center, only at the train station. Fortunately, I confirmed this a day in advance. Also, during the rental process, the car rental staff will inform you that the driving license translation provided by QEEQ is not legal in Spain. They can still rent to you, but if any issues arise, the police will treat it as driving without a license.