We had a great stay at Mario's place, he greeted us at his building's front door and helped us with our bags upon arrival. Our only concern was that the unit was 4 floors up, which is fine for backpackers but quite tough for our 30kg luggage. But Mario helped and even got the heavier one. We stayed in his place for 4 days, informed us of how to get around Rome.
The privacy was a plus, as we had the entire place to ourselves. The place was complete with everything we needed, and it was great that we were able to do some laundry too!