Alessandro's place is wonderful. It's small but cute and it utilizes its space well. We were only there for one night at the end of our trip before flying out early in the morning, but the location is great for exploring Rome. Right in the center of the historic section, literally steps away from the Pantheon.
There will be some noise late at night from the street below because there are busy restaurants down there, so be aware of that. It's not overly loud, per se, but it's definitely not quiet. It's also a fourth floor walk up with no elevator, which was a bit daunting with all of our bags. I wasn't aware of that ahead of time, so be prepared. That said, it really is a lovely little apartment.
Alessandro is a great host, very communicative and responds quickly. He also provided some drinks in the fridge which were very much appreciated.