The tour was great. The guide was really well informed on every aspect of the tour. Also, she was pleasant and witty. The walk from the Pinecoteca Ambrosiana Art Gallery to the monastery of Santa Maria delle Grazie was a real hike especially for some older people in our group. The guides explanation of The Last Supper including a quick rundown on each of the 12 apostles depicted was enlightening for me who grew up with a print of that painting adorning my parents' dining room.