We spent 6 days in the flat with our two kids. The location is, I think, next to perfect - away form the crowds (believe me, you'll want to be away from them after wondering around near Rialto and St. Mark's Square), yet very close to lots of very good restaurants, a supermarket 3 min away, and a 15-min stroll to Rialto, 20 min - to St. Mark's Square. The place is very clean, with lots of fluffy towels, good shower pressure, very good hairdryer ))), and generally all that you need.
Communication and check-in were very efficient and smooth, thank you Giacomo for suggestions of a guide, our kids loved the 3 tours that I booked with her, and even us adults have learned some interesting facts about Venice. And Fabio, your tips on restaurants were very useful, thank you!
I would definitely recommend this place if you're looking for a comfortable base to explore beautiful Venice!