We stayed 4 nights in Delia's apartment in June 2018 and highly recommend it. First off, she is a super host; incredible kind and helpful. Our flight was canceled due to a strike so we came a day early. We contacted Delia to see if her flat was open for the early night. She responded that is was not and found us a room in a small bnb around the corner. She arranged for a taxi to pick us up at the airport and deliver us to her flat and then walked us to the new hotel and even made dinner booking in a local restaurant.
When we checked in to Delia's the following day the flat was spotless and she had some food and fruit for our stay. She checked in with us by What's App every day to see if we needed anything. She lives in the building as well. She really cares!
The location is within walking distance to everything you want to see in your first week in Rome. The flat has all you need, including guide books. Wifi works well.
We highly recommend you book this place. Adam and Susan