I stayed at this place for a month and I am staying here for another month.
The location is very convenient: 14 minutes walk to Saint Peter's square or 10 minutes' walk to the Sistine Chapel (Vatican's Museums).
Metro Station Valle Aurelia, is a 3 minutes' walk (Google map) but it took me 2 minutes most of the time, from Francesco's apartment (no, not the Pope's apt.).
From there is a short subway ride to the Colosseum, Piazza di Spagna, Piazza del Popolo, via Condotti and all that jazz.
Neighborhood is new, super safe and super clean... maybe because is the Pope's zone (yes that Francesco now).

Everything was perfect in the apartment : very clean room, bathroom, kitchen, towels, sheets, bed, etc.
Air conditioner, TV, elevator, refrigerator, stove and Wi-Fi, worked very well.
Francesco, Sarah and Pamela are exceptional hosts, very pleasant and courteous; they respected guest's privacy while making sure that nothing was missing and everything was clean as a whistle.
I am looking forward to next month's stay.
Thank you guys.
Paolo
Silicon Valley CA.