Alessandra is great! I recently traveled to Venice prior to going and upon returning on a cruise. Alessandra made special accommodation and allowed us to stay for 1 night prior to leaving for the cruise since we were staying for 3 nights upon departing from the cruise.
I highly recommend staying here if you are unfamiliar with the area and/or don't speak Italian. Alessandra speaks fluent English and answers questions very quickly. She was very helpful in telling us directions to and from various areas!
The flat includes everything you need. Its spacious and in a great location! My family liked the fact that we were not in the extremely touristy area (San Marco) but we were a short walk away if we decided we wanted to go there. Since the flat is in a "college area" there are plenty of cafes, quiet bars, and restaurants nearby.
We took a private water taxi to and from the airport (which is pricey - $80 euros but much faster than the water bus). Again the convince of the flat allowed us to be dropped off at the end of the street and walk about 50 yards to the flat. It was also close to the the cruise terminals!