This is an ideal location if you are visiting Venice for the Biennale as it's right between the Giardini and the Arsenale. It also very close to the Via Garbaldi which is great for restaurants, bars and (non-tourist) shops.
The apartment itself is spacious: there are two bedrooms (one with 2 x single beds and one with a double sofa-bed) and a nice living/dining room as well as kitchen and bathroom plus a cupboard with a washing machine. It's on a quiet canalside and felt very secure and, despite hot weather, the apartment stayed quite cool, helped by some fans.
Elisabetta was very easy to communicate with and helpful with my queries. I would recommend highly.