Visit Tuscany: Here is one of Pisa's hidden gems: the 1989 mural by Keith Haring, just few months before his death. Continue to discover the lesser-known side of Pisa: http://bit.ly/1if600J
Ma Li: Name the beer you want and you'll have it. They've got varieties from all over the world. A cool place not only for the locals but also for the foreigners to hang out.
Serj Lotutovici: Great place for a cup of coffee or tea, or something much stronger ;) the staff was nice and very friendly. If you into dessert ask for their specials of the day.