I rarely give 5-star reviews for overseas car rentals because they usually try to sell us insurance when we pick up the car. However, this place was absolutely fantastic. They did ask if we needed additional insurance, but I explained I already had comprehensive coverage through Ctrip and didn't say anything. My biggest surprise was when a stone bounced on the highway and dented the door. I'd read other reviews saying we'd be fined thousands of pounds, and I was so worried I couldn't sleep all night. However, when we returned the car, the staff was incredibly friendly. They brought a circular measuring scale and, after consulting a very handsome Chinese guy (who I think was their manager), we were told no compensation was necessary. So, you have to experience it yourself to know for yourself.
Our car also received a free upgrade, but be aware that the store is closed half-day on Saturdays and all day on Sundays, so be mindful of your pickup and return times.