1. The pickup location couldn't find the reservation, and we were directed to another branch; 2. The car class was downgraded, we got a SKODA FABIA in poor condition, unsuitable for driving in the Black Forest area; 3. The designated return spot at the central station was insufficient, requiring a long queue at the only counter to fill out forms, almost missed the train; 4. The actual rental company was EUROPCAR. At pickup, another family was also complaining about poor service... Haha!