We found the Airbnb to be a nice and clean little place, very close to the Biennale locations (Arsenale, Giardini). It's a little bit further from other main sights in Venice, but it's worth to discover what's inbetween anyway ;-) Communication with Angie/Salvatore was very easy and we had no problem with the self-checkin thanks to their really detailed description. If you're looking for a simple place to sleep and don't mind the two rooms not really being separate from each other, then I recommend staying there.