It wasn't Buchbinder (they were bought by Europcar?). Be careful in the return process because they will "find" you an invisible scratch that you will never be able to trace (like under the baggage hood) to charge you for handling and fixing fees.

Anything was perfect.

I brought my driver's license and the free international driving permit translation certificate from Zuzuche, but I didn't get the German sworn translation certificate. As a result, the German car rental company required me to take full insurance or I wouldn't be able to rent the car. I was in a hurry and didn't have time to argue, so I ended up paying over 200 euros for insurance for 6 days while the car rental itself was just over 150 euros! Last time I used rentacars.com in Germany and paid directly on the website, then went to sign the contract and got the keys without anyone asking about the sworn translation certificate or insurance.

Long waiting time in line, they changed the car model without permission, giving me a 1.6 Jeep Renegade (which starts at 110,000 RMB in China). I had reserved a BMW X1, but they claimed both cars are in the same category. The 1.6-liter engine's acceleration was terrible, and the driving experience was very poor. Complaints were useless; they said if I wanted to change the car, I had to pay more, and they kept pushing insurance. This rental company is very small, has few vehicles, and the car we got wasn't even German-plated; it had Slovakian plates. Be cautious when choosing a rental company. Don't do what I did, choosing a cheap option and regretting it later. Beware of foreign scams.

Location was a bit hard to find, but the reception was smooth

Quite patient, there were two staff members, and the queue time was not long.