The location for returning the car at Cologne station is not clearly marked, and the navigation on the car rental app is also incorrect. It took a lot of time to find the return location.

There wasn't much of a queue. Since we arrived early and refused the upgrade, we still had to wait three hours to get the car. The experience was okay, as it was one hour earlier than the scheduled time.

Overall good

The pickup point was quite far. When we got the car, we noticed several scratches and had to go up and down several times to find a staff member to report it. It was exhausting.

The staff was nice, but the waiting time was just too long. We had to wait for a very long time. In Germany, it’s mostly self-service. They give you a key once everything is done, and then you walk to the parking lot to get the car. The Munich parking lot was the multi-story type, and after coming down, we lost the GPS signal in the congested streets. No... signal... at all, so we drove randomly for a while before the navigation started working. But the car was very clean. We returned it at Frankfurt airport; you just hand over the car, and it's done. Super convenient. Renting a car in Germany is awesome.