Really cool apartment down closer to St. Mark's. Rooms were really nice, bathrooms were large and had lots of amenities. We had 3 couples staying together and had tons of room. The Wifi topped out at over 300MB/Sec, which was a welcome relief from some of the other places we stayed in Italy.
Checkin is with a local hotel, so made it super easy for us to arrive and leave when was convenient for us.
One tip...if you are coming from the airport with luggage, just take the water bus directly from there to the San Giglio stop. It costs 16 Euro, and about 1:15 in time. You can do it faster with other methods (taxi to main station, then taking water taxi) but none will be as easy. We learned that the hard way on our way to the apartment.
We definitely would stay here again!