I've got 3 days in Berlin with my adult daughter at the end of February. We've booked cheap flights and a hotel near Hackescher Market S-Bahn station. We are keen sightseers and able to walk decent distances. There are loads of ideas for 'must see' places on the internet, but you can't beat personal recommendations.
If you have been to Berlin - where would you recommend? And where would you avoid? Thank you x