The insurance details were not accurately described; it didn't cover everything as claimed. We ended up paying an additional 500 euros at the counter.

They force you to buy additional insurance, otherwise they won't allow you to cross the border. The crossing fee is only 25 EUR, but the insurance costs 66 EUR plus tax, which altogether cost an extra 120 EUR. I booked a C-class but got an X1 instead, which is clearly not the same class in China. Maybe in Germany, X1 has the same price as C-class. I've had a good impression of Hertz before, but this experience was very disappointing. The staff refused to mediate over the phone with the booking agency. It was really frustrating. If I weren't in a hurry, I would've canceled the rental. Do not choose this company.

When I arrived in the morning, the store hadn't opened yet. I was the first in line and got everything done in less than three minutes.

Pickup and return were very convenient. It took a while to find a place to refuel at the airport, but everything else was great.

Booked an automatic BMW sedan for 400+ euros, they insisted it was unavailable and gave me a terrible Ford car, a manual without navigation. Then they offered a tiny Citroen automatic also without navigation. I had no choice but to switch to a Mercedes C180 which cost an additional 30 euros per day. After ten days, they charged another 100+ euros saying it was tax. In the end, I spent over 800 euros. What a rip-off!