Odile's flat is superbly situated in a quiet place yet close to two vaporetto stations (F-te nuovo for services to and from the airport and Ca' d'oro for services along the Gran canal, both stations are connected with the railway station ). San Marco is within 15-20 min.walk. The flat matches the description, it is very clean and the bed linen is of much higher quality than you usually find in an airbnb lodging. Although the place seems to have been rented out for years it feels like a true home (or a private vacation home), not like a soulless property with stripped down furnishing specially for airbnb. It has all one needs for a short stay (however do not expect to find basic food supplies like salt, sugar, tea or vegetable oil for cooking). The beds are great, but couples will have to mind the gap between the two single beds in the bedroom. The desk in the living room is great for working on one's laptop.
Odile sent us the keys by registered airmail. It was actually very convenient for us, for we didn't have to arrange the check-in time, I haven't met her in person, but we communicated by phone and by email, and she's very communicable and always responded swiftly to our inquiries.
All in all, I highly recommend this place.