"Totally equipped loft in the heart of Venice" is a perfect description! We have been to some other places with Airbnb and none of them was fitted to the needs like that place. Microware, silverware and dishes just to name some of the items. Everything you need to stay in Venice is there.
We arrived early and left late. That was not problem. Check -in and -out have been very flexible and Eloisa answers any mail almost immediately.
Even if the apartment is not at the waterfront, the Vaporetto-connections are not far. Lots of small to medium "supermarkets" are nearby. The quarter "Castello" is a lot crosier than San Marco. Nevertheless, it should be mentioned that the apartment is located directly above a restaurant. However, by 22:00 it gets very much calmer.
As a summary: I highly recommend that place.