We really enjoyed our stay here!
First, the hosts got us into the apartment really quickly after our arrival and showed us around the apartment. Violetta was even nice enough to get more converter plugs as there weren't any left.
Second, I really liked that the location was not in a touristy area - the area has some wonderful restaurants and pizzerias - but is also within walking distance from the Colosseum and Emanuele Vittorio park and subway (which had a night market with food and drinks while we were there!). Plus, there is a Conrad (grocery store right across the street).
Third, check out was really easy because you can just leave the keys in the house and close the door (which is essentially locked from the outside without a key).
I would stay here again the next time I'm in Rome. Thanks Violetta and Daniele!