Q. which city we should stay in central Germany, we will be driving around most of the central Germany by car, hence it should be within 3 hrs driving distance to central German cities

Berlin(2N) → Hannover(2N) → Dusseldorf(2N) → Frankfurt(2N) → Nuremberg(2N) → Munich(2N)

Berlin(2N) → Cologne(2N) → Frankfurt(2N) → Stuttgart(2N) → Munich(3N)

Berlin(2N) → Hamburg(2N) → Munich(2N)

Berlin(2N) → Munich(2N) → Frankfurt(2N) → Triberg(1N) → Cologne(2N)

Prague(3N) → Berlin(2N)

Berlin(2N) → Warsaw(2N) → Krakow(2N) → Budapest(2N) → Bratislava(1N) → Vienna(2N)