Lorenzo's place is at a good location.
It is close to the train station (about 5 minutes by taxi) and to the main tourist sites such as Duomo, San Lorenzo market, and good restaurants around (about 15 minutes by walking). And the neighborhood is quiet and clean and we felt safe walking around any time of the day.
He also called a taxi for us the day we're leaving so we were thankful for that.
But his place could have been a bit cleaner. Everything was very clean and good space for two of us, but found some hairs on the floor and inside the bathroom - but it wasnt a big deal for us so we just wiped them.
Overall it was a pretty good stay.