It's a great cheap place to stay in Venice, especially if you go for the Biennale as it's so close to Giardini and Arsenale. It's not very close to the more popular touristy areas, which on the other hand makes it a very quiet place to stay - but expect to walk around a lot and/or to need a water bus pass to get around. Do read the description carefully - this is a budget place for a reason (e.g. it doesn't have a kitchenette or even a minifridge), but the ad is honest about it. And if you go in the height of summer I recommend paying the extra for the air conditioning...