Let me start by saying I NEVER write reviews for anything - This apartment is wonderful and I HIGHLY recommend it! It is perfectly located between the Rialto bridge and St. Marks, and steps away from a delightful piazza, Campo S. Stefano. The master bedroom was spacious (the one with MM on the wall), and the other two bedrooms were comfortable for our four children (ages 6 - 21). After confirming everything by email, I called Maria when we first stepped on the vaporetto - when we arrived at our stop 20 minutes later Carlo was waiting for us. Carlo walked us to the apartment and showed us how to operate everything - a/c units, wifi, fuse box, tv's, etc. Carlo made suggestions on museums, sights and restaurants. He also walked us around the apartment telling and showing us what was in different directions (Venice is all narrow twisting streets and alleys). Later in the evening Carlo texted to make sure everything was good (all was perfetto!).
I regret we did not stay in Venice longer, as there is so much to see and do. It is best in the evenings and early mornings when the cruise ships are not yet in - the main sights are crowded in the middle of the day.
Carlo and Maria are wonderful hosts, and the apartment is all you can ask for, and more!