Sometimes hard to understand the guide because the guide is talking fast and his microphone the agency gives him is the smallest and the cheapest one. If you have your own earphones bring it with you, at least you will have quality earphones otherwise you will get the same low quality you get when flying. Maybe the sound will be better. Simone the guide was engaged and did his best. The company has many guides. But taking one of these all tours is almost the only way to see the “Last Supper” because they only allow small group of people and the tickets is sold out fast every three months ahead (just check it out). This walking tour took 5,5 hours including one hour lunch on your own. Even of the low quality of the sound it is still a great way to experience the places we visited. Recommending but bring your own earphones (3,5 mm but it could be the smallest one 2,5 mm).