Elena was trully the greatest host. She waited for us despite the delay of our flight at our arrival, not to mention she was kind enough to call a taxi for us to get to the airport at our departure even though it was at 5am.
The appartment's location is very convenient. It is at a nice street and you can find anything, traditional Italian cuisine restaurants and gelatos right outside. (I especially recommend the ones that are across the street called "Sweetness and Co."). Besides, it is at a surprisingly short distance from San Pietro. It is somewhat bigger than it looks like in the pictures. There were three of us and the space was actually enough for us to be comfortable. Also the place is very cozy. It has everything necessary to have a pleasant stay. The kitchen is well equiped as well as the bathroom.
If I ever go back to Rome, this would no doubt be my choice again, it is most definitely the best option and I can't praise it enough.