I had a very good stay at Simone's apartment which in reality looks just the same as in pictures. Everything is new and very clean. The windows face the courtyard. That's why you don't hear the street noise.
The tram No.3 and No. 19 stop is virtually at the door of the building. The first one takes you to Colosseo in 10 minutes. The second one goes to Vaticano via Villa Borghese.
Moreover in some 200 meters there is a huge transport hub at the Porta Maggiore square. The closest metro station Vittorio Emmanuele is also in walking distance.
Simone is very nice, careful and welcoming. I get more than I expected and recommend Simone and his apartment to anyone. It's definitely a value for money.