We had a great time at Sabrina's studio. It's cozy, perfectly located, really close to Cavour Metro Station and a short walk from the Colosseum. There are good restaurants around the place, and the area appeared safe even by night.
Sabrina was really nice, altough we didn't meet. Fortunately she was able to help anytime by cellphone, which was really usefull. She also made an effort to provide us some more time at the studio, and we really apreciated that.
I'll definitely try to stay there again when I'm back to Rome.