Florence stole my heart.
It's best i start by saying i walked everywhere. its an amazing city with so much to explore from the ponte vechio to Michalangelo Square to the Duomo. It contains a laid back charm and is a nice place to chill for 3/4 days.
Insider Tip:go to the piazza michalangelo at 2am bring a book and a bottle of wine and read in the statue gallery in the medici square until the early hours of the morning