Picking up and dropping off the car at Frankfurt Airport is very convenient. There's a counter in the arrival hall where you can complete payment and then go to the underground parking level 1 to get the car. Returning the car was a bit tricky, however. The navigation led us to the lower levels (B2 and B3) of the parking lot. After driving around and exiting, we asked the security at the exit and found out that the entrance to the rental car parking area on B1 is near the parking exit via a small ramp. It would be great if the navigation could direct us to that ramp directly. When returning the car, three people inspected it thoroughly, showcasing German meticulousness. In contrast, in France, a single person glanced at it and said it was okay.

Very good

Super easy return process.

Enterprise is very convenient as their station is the first one right outside Terminal 2. I rented a Passat but they upgraded me to a fairly new Mercedes. Returning the car was also easy at Terminal 1, as there are service desks at both terminals. You can take the elevator to the departure level after returning the car. The only downside is that the staff speak English too quickly and keep trying to sell insurance and GPS rentals, even though the cars are usually equipped with it. Renting a car is quite necessary when traveling in Germany.

Overall, pretty good. Changed the pickup location last minute, and the service was still very accommodating.