We met robertos assistant at the studio and he was very welcoming. I was 10 minutes late due to a delayed plane ride and I called Roberto and he answered right away. His assistant opened the door for us one minute later. Roberto has a very conveniently located place and it's literally a 5 minute walk to the metro station and 10 minute walk to the Vatican. Perfect location and the place was great. AC came in very handy for those hot summer days!