This apartment was great. It's clean and bright. The Airbnb pictures are accurate and representative.
We were met by Danilo, a retired gondolier, who also offered us a tour. If you have the time, this tour around Venice is highly recommended. You get opportunities to see corners that you might otherwise miss–either real places or an historical perspective.
The apartment isn't right in the bustling tourist centre but is a nice walkable distance. Being in Castello means you get that broader experience of Venice. It's close to restaurants and bars, fruitsellers and a Coop. The vaporetto stop is nearby, so it's easy to reach any part of the lagoon. (It's also easy to reach from the train station or the airport.)
We very much enjoyed our stay here.