The apartment is very lovely. It's located in Trastevere, so you have dozens of nice restaurants and bars around the corner. Everything other you need (supermarkets, pharmacy if you need) is also just a 5 minute walk (maximum) away.
We couldn't meet Piero in person, but we were welcomed by a friend who showed us around and told us everything we need to know about the apartment. Also both very available for further questions and gave us some nice advice for bars and restaurants.
The apartment itself is very nice equipped. You'll find anything you need for your stay. Also the style of furniture and decoration is very nice.
All in all, we really liked our stay at this apartment. I can totally recommend it! :)