score:4
If you are serving by SIXT (which I used, that's why talking about this one, not because it's the best one) rental company the answer is yes, you can drop of the car in any of their office (most of the rental companies allow it), BUT if you going to drop it of in another city you get it you have to pay much more money even if your route known beforehand. Sometimes it costs more even if the offices are different in the same city.