Sara's place is great. I was visiting Rome for a conference at Fiera di Roma. The place is 7 minutes walking distance to Tiburtina station from which I could get to the conference location in 37 mins without changing trains. The same line goes all the way to the airport as well, probably 45-50 mins. Sara's house is also about less than 10 mins walk to Bologna where you can take the metro to the historic downtown for sightseeing. So location worked very well for me. It is far from tourist crowd.
House was very nice, clean and cozy. It is in a little old building, but well kept. For instance the windows and doors seemed to be renovated recently. Very quite neighborhood. Wifi was very good, so that is another plus.
Sara met me at her place to check me in, even though I was delayed at the airport several hours due to long passport lines. Her English is quite good, so communication was very easy. She was very easy to reach to, and checked on me through texts several times during my stay. She was also very helpful when I lost my phone in Italy. She was flexible with the check out time even though at the end I didn't need it.