I chose to stay at Ca Contessa because it is very close to the Biennale Arsenale site, and I was visiting Venice for only 3 days specifically to see the installations. Now that I've experienced this very comfortable flat and have become acquainted with the quiet, safe, beautiful, and easy-to-navigate neighborhood, I would return to Ca Contessa no matter what my plans are. The Arsenale boat taxi is very close, but it is also a fun and easy 15-minute walk to Piazza San Marco and a just a bit more to other neighborhoods off the beaten track. The flat itself has air conditioning and, as I said, is peaceful and relaxing after a day of traipsing around the city (even after climbing the three flights of stairs to the flat). A friend was with me, and she slept on the sofa bed, which she said was quite nice, as was the bed in the main bedroom.
Michele is very attentive and responsive, and Laura, who guided me to the flat, is so helpful and generous with her tips. Also, Michele's interactive guide to the city and restaurants is very helpful. I have no hesitations recommending Ca Contessa to all.