We had a wonderful two night stay in Venice. The apartment is well located and is walkable to the main attractions, however we preferred walking back just a couple of canals where it was so much more peaceful. The apartment is very close to a small supermarket which was really useful.
The view of the canal really sold this to us and we spent two happy afternoons watching the gondolas and boats go by. If you are a light sleeper take some ear plugs as the water is right next to the bedroom and you may be woken by the early morning deliveries.
Overall a wonderful stay in a great location.