The AirBNB is as central as it gets in Venice, right behind San Marco Square. Location is perfect. We enjoyed our stay in Venice tremendously and especially in the early morning hours, it felt like we had the city's most beautiful monuments to ourselves before the crowds of other tourists came in.
Communication with the owner and the check in service was good; they answered quickly and also came very fast to help out when we had a few issues. They were efficient and gracious in resolving these.
The beds were comfortable and the airco was a blessing during the Summer heat - it was good to have a cool home to turn back to and sleep well.
The bath room is basic and having only one bathroom with toilet for the whole family led to some queuing. But manageable.
The apartment is in a condo and there's people who live there as well as other tourists; we experienced that the garbage collection cannot handle so many people and right behind the front door of the condo there was a lot of garbage lying around. The apartment itself though was very clean.
The biggest improvement point for us was the wifi. We were there during a busy period and with so many tourists on the same infrastructure in an old town, the bandwidth broke down so we were without internet; in a family with 4 teenagers ... well, you can imagine.