Luca's apartment is great for a family holiday in Venice (we have one kid, and we had plenty of room to spare). The apartment is roomy, and well positioned - close public transport, to Bienale, 15 min. walk from St. Mark Square.
Luca was very supportive - he knew what we might need before we did - and we have nothing else than good things to mention about the way he handled things.
It was our first trip/stay in Venice and there was not one moment in which we've felt lost (there were maps in the apartment and Luca's answer to texts was close to instant - never felt the need to actualy call him..)
All together, I highly recommend Luca and his house as a home away from home in Venice. We had a great holiday and we intend to return.