The apartment was small but immaculate. Communication was excellent. Giovanni and his wife met us at the vaporetto stop and took us to the apartment to drop off our bags as it was before check in time. We came back after the apartment was cleaned. Giovanni gave us a map with recommendations and showed us everything inside the apt, and said he was available if we had any questions or problems. (We didn't, but ran into him randomly one night in the street!). He also left us a bag of Venetian cookies. Both he and his wife were very warm and friendly and welcoming.
Things to keep in mind: the apartment is new and clean, but wifi isn't yet connected. (They're working on it, and it wasn't an issue for me so much, but may be for some and I didn't notice there was none in the listing.)
The bathroom is really tiny and the small mirror over the sink is the only one, which can make it difficult if one person wants to brush their teeth and another is putting on makeup; also no shelves in bathroom to put toiletries.
Finally the windows have shutters and mosquito net curtains (which don't keep out Mosquitos at all). If you want to leave the windows open (and let in mosquitos) you have to close the shutters to keep out sunlight in the morning, so some curtains would be nice. The air conditioner in the bedroom was a bonus.
The location was amazing. Right by San Marco but in a quiet alley. Safe. Supermarket nearby.
Overall great experience, but the place would be spectacular with a couple of minor adjustments (wifi, mirror in bedroom or other room, extra pillows, some dark curtains, and maybe a luggage stand for those on a short stay who don't want to fully unpack.)