We had a great experience with Marco, our guide or as he would like to refer himself 'Sérgio' and the group members his 'Platoon', adding a bit fun and bonding within the group. Marco was very passionate and informative regarding the history and cultural background for each of the sites we visited during the free tour. By the time tour ended, we had covered almost 80-90% of the sites I planned to visit in Milan. It was really nice to be on-board with Marco. Would definitely recommend him.