The apartment was small but as expected. The pictures are accurate. The loft has a sloping roof so watch your head! Trastevere is a great neighborhood filled with restaurants, bars, markets, merchants, etc. The apartment is in a building that also houses a theatre. The courtyard to get in and out of the theatre is directly below the apartment, and given that the walls are very thin, you can hear everything. We were kept awake most nights until 1-2am due to the theatre and then the after party that went on in the courtyard. If you are going to Rome to party, this won't be an issue, but if you want to get a good nights rest be sure to bring really good ear plugs and a sleeping mask.
As far as contact with Andrea, he was helpful prior to our trip in setting up a taxi from the airport. After that we had a hard time reaching by email once we arrived. We were wanting some info on the area, taxi's etc, but eventually figured it out on our own.