We thoroughly enjoyed our stay at Paolo's apartment. It was superbly clean and well maintained -- just as it was shown in his photos.
His area is quiet, far from the busy touristy places -- we loved how we could all get a peaceful sleep after a tiring day of exploring Venice. It's also very near the vaporetto station, so traveling to and from the airport/train station and the other islands was so easy.
Paolo was always easy to reach. Our flight was delayed and this didn't bother him much. He was really accommodating and even gave us a list of recommended restaurants and museums (that were part of Biennale).
The only downside was that we couldn't use the washer past 10pm and in the early morning, so as not to wake the neighbors. But apart from that, everything else was great.
I highly recommend Paolo's apartment :)