Gli Angeli and the host, Sonia, will not disappoint. The location is perfect for travelers already a bit familiar with Venice, for those visiting the Biennale arts festivals (across the street!), for those who need space and/or who like to cook, and for those seeking a quiet, romantic location. It's bright and has a lovely garden. It's a 10-ish minutes walk to San Marco, 20 mins to La Fenice. Transportation is great, since the Arsenale and San Zaccaria vaporetto stops are minutes away. The airport water bus, the Alilaguna red and blue lines, serves the Arsenale stop, 5 minutes (and only one bridge) away from the flat. The location is next to Via Garibaldi, a neighborhood shopping and dining artery. You will encounter mostly locals here relaxing after work and enjoying the good life. There's a COOP grocery store for your every need. There is also a nice park with a Garibaldi fountain stocked with Koi and turtles! (Where do they go in winter?)
The WiFi was strong and reliable. The only drawbacks in the flat were some deferred maintenance issues like a non-working dishwasher and broken screens that could be repaired. Also, mosquitos are a perennial problem all over Venice, so come prepared with DEET anti-skeeter lotions and sprays. Otherwise, the unit is nearly perfect.
The best attraction is Sonia herself, certainly one of the most energetic, accessible, amiable, and conscientious hosts around. She lives above the flat so is always available to help out. Her English is very good. If there's a problem, she will try to fix it. If you need information, maps, tips, etc., she will be pleased to assist. We would happily return to Gli Angeli.