Alberto's place is in an ideal location. It is a short walk to St. Mark's and the Rialto bridge - right in the heart of the action. Windows in the common area look directly onto the canal where you can watch the gondolas pass by. The apartment is large and attractive and there was ample room in both the bedrooms and common areas for our party of 4 couples.
Alberto had someone meet us at the water bus station and this was greatly appreciated because navigating the streets of Venice is difficult. Google Maps doesn't work well because street numbers seem to refer to neighbourhoods rather than streets. In fact, after we were taken to the apartment we managed to get lost several times when we went out on our own. If you are using Google Maps it is better to search for a landmark than a street address. We used Ivo Ristorante which is very close to the apartment, for this purpose.
Overall we were pleased with this rental but a little more attention to detail regarding the amenities would turn this from good to great.