The day before departure, I was informed that the car model I had booked was not available. The rental company helped me to book another model, but it was also unavailable when I arrived at the store. They only had a Ford Fiesta left, take it or leave it. This store is truly unreliable. They overcharged me for the child seat. When I returned the car, I pointed it out to the staff, who promised a refund but never followed through. It took 3 months to get a refund after contacting them through the rental platform. Their efficiency is really questionable.

Enterprise is a small company, and the branch near the Frankfurt East Train Station is really tiny... They only had one car available, so there was no choice. After negotiating, they gave us a free ride to the airport where we could choose from four cars. Returning the car was also hassle-free. In summary: Enterprise offers enthusiastic service and competitive prices, but they have a limited number of cars (didn't see the numerous Mercedes and BMWs as some mentioned). You need to be lucky.

Arrived at Frankfurt train station, took nearly half an hour by taxi to get to the car rental company Enterprise, only to be informed that the selected automatic Volkswagen station wagon was not returned, and they only had a manual version of the same car. Considering the complex road conditions in Europe, coupled with winding mountain roads, driving a manual with kids is inconvenient. More importantly, I haven't driven a manual car in nearly ten years and wasn’t confident. After negotiating, the car rental company made calls for almost half an hour, and I had to make nearly ten minutes of international calls to QEEQ. The rental company then said they found the only automatic car available and took us nearly 40 kilometers to their headquarters. What they gave us was a small Nissan SUV, which couldn’t fit our large and small luggage. With no other options, we had to accept the original manual Opel station wagon. This car rental experience left me speechless... The GPS rented for free from QEEQ before departure couldn’t locate our destinations at all. Thankfully, we had downloaded Google Maps on our phone before the trip, which helped us successfully complete our road trip. A word of advice to those choosing cheaper rental companies: There are many affordable rental companies in Europe with very convenient locations; you can book directly on their websites. Using intermediaries for booking complicates communication with European rental companies. This review is just my personal opinion, individual opinions may vary.