Sabina was a great host, she always answered to any question we had. We didn't meet her but her coworker Tyron showed us the apartment and explained everything perfectly.
The place is very good located, only 15/20 minutes walking until Piazza San Marco and the Fte. Nove's vaporetto station is just in front of the main door (vaporetto lines to the train/bus station, jewish ghetto and Murano and Burano islands).
Not suitable for handicapped people, as the apartment is on the 2nd floor and there's no lift. Microwave was also missed, but these are only little things to be improved.
The place is comfortable and you really feel at home in Venice for a very good price. We recommend it!