Nina and her son Luigi (who is the English speaker) welcomed us very warmly into the flat. Luigi greeted us at the front door and showed us around the flat. He also recommended a neighbouring osteria for lunch — although to be fair the flat is superbly located and many, many amazing restaurants and wine bars can be found around.
The location is very convenient — close to Termini station and the Colosseo, and one minute away from the subway.
I recommend this flat and would go again next time!