Excellent location to both St Marcs Square and Rialto bridge. Roberto was very responsive and Matilde met us at the water taxi dock to greet us and to walk us to the apartment. Beds were comfortable, showers were good and location was quiet. Apartment was very clean, great air conditioning which was important since Venice was experiencing an unusual heat wave.
Unfortunately it was a VERY difficult walk both to the apartment (including 2 bridges to carry luggage over) and then up to the 3rd floor which was 5 flights/50 steps. We had heavy bags and no help. We arrived by water taxi during busy hours so we had to be dropped off at the grand canal due to water traffic restrictions. When we left we were able to leave by a much closer location so we had no problem other than the stairs down. Matilde arranged for a water taxi and it showed up exactly on time. If you are not strong enough to deal with carrying bags yourself, arrange for help or choose a hotel that has a porter.