The flat is located south of the grand canal, which is quieter even in peak season. We went in July, which is not the best time to visit Venice as it's hot and overrun with tourists, but enjoyed our stay nonetheless. The flat itself is spotless though the stairwell can get a bit musty. Didn't feel the need for air con in July at night as there's a cooling sea breeze. We spent the day out of doors anyway.
Laura is a wonderful host. We would stay again.