Overall the apartment is excellent. The location and amenities offer all you could want from a flat in Venice. The check in was done via a code which means it is easy to check in no matter when you arrive. The Water-bus from the airport drops you only a 5 minute walk from the apartment if you disembark at ospedale port. This port also offers water buses to the other islands. One thing i would note is that the apartment block is quite noisy , you hear the door open every time someone comes or goes as well as talking in the hallway.
Overall this is a great apartment in a great location for exporting Venice.