Venice Magic- Biennale
If you like arts Venice is the perfect place: not only the city itself is lke open-air museum, it's full of places to visit and if you go there during biennale like I did you will have chance to see many exhibitions inside the gourgeus venetian houses (most open for free). The main exhibition is in Giardini+Arsenale and requires at least 2 full days to visit.
Insider Tip:Don't miss museum inside San Marco, to have chance to admire the panorama from the balcont and the mosaics from near. If you have extra time after visiting Venice, Murano and Burano, pay a visit to San Lazzaro (armenian monastry island). Pay attention to restaurants, most of them add 12% taxes (they invented in Venice). Pay attention expecially because this can be added to service. I noticed though that usually the ones that don't have (at least in main island) are not ran by italians or serve frozen foo