Marzia's place is at perfect location & very close to Rialto bridge where it is central to get anywhere by water bus. Walking distance to everything we wanted to see making exploring easy. Yes there is a fish market (that is affordable and delicious) right downstairs so the smell in the hall way is strong. Especially during the summer with the humidity... BUT you can't smell that in the apartment so it was fine. The apartment is 3 stories up with no elevator so be prepared with that regarding luggage.
Pros: Very spacious, central, equipped kitchen & clean for the most part. Good stay for just a few days.
Cons: The AC unit is placed in the living room and the air only reaches out 2-3ft at most so it does NOT reach the bedroom.. which was a disappointment. We're on vacation so we spend all day out in exploring Venice an comeback mainly to rest & sleep. So being very hot while sleeping made the AC unit pretty much useless for us. At least a fan in the bedrooms would've been nice because both rooms felt like an oven. Also, the owner was slow at communication.
Other than that, the apartment was okay for just a few night stay. & location is everything here! & washer was great!