My friends and I enjoyed staying at Silvio's place. It was more like a traditional hotel or bed and breakfast than what I normally stay in when traveling with Airbnb, in the sense that it wasn't someone's personal home; our sheets and towels were replaced everyday, and the room was cleaned. The experience was wonderful, and dealing with Silvio was great. Being literally between the two metro lines would be great, had we used them, but we pretty much just walked everywhere. Rome is so full of beauty, it's worth seeing it all on foot. Most of the time we were there we spent visiting my friend in Trastevere, which is only about a 35 minute walk across the city centre.
I'd recommend this place to anyone traveling with a group of close friends. Thanks, Silvio!