I think that for a very fast and full of energy visitor 3 full days is an absolute minimum. For someone (like me) interested in history, architecture, art, the Berlin wall, cultural events, meeting people and VT-ers + visiting surroundings (Potsdam) hmm... a week maybe not enough. You can stay in Berlin even two weeks and be sure, you will never be bored.
Don't you have so much time? No worries, thanks to very efficient public transportation you can visit a few top attractions during a few hours. Or go and... come back again :-) Enjoy!


