Martina qualifies as a 'superhost', but even in that category she's exceptional. When our plane was late, she was so kind as to make a reservation in a local restaurant so we didn't have to worry about finding something nice on a saturday night. The apartment is 2 minutes walking from the Arsenale, in a lifely but not touristic street, so you cannot find a better place for visiting the Biennale. And also important: the bed is very good.