The meeting point is located near the corner of Via Leone IV and Via Candia (the gate of our agency is between the restaurants Pescaria and Hamerica's).
The meeting point is easily accessible by Metro Line A, getting off at Ottaviano station and walking for about 5 minutes.
The tour will end in the Sistine Chapel and the clients will go out from Vatican Museums main exit (it's in the same point of the entrance)