The apartment is spacious and clean. I stayed with my family (2 adults , 2 kids) and the extra bedroom had two proper beds for each of the kids which helped. We.disnt use the terrace much since we were out all the time but its a cute feature. The balcony overlooks a small square, and the apartment is truly a 2-3 minutes walk (in either direction from St. Mark's square), or the Rialto bridge (which is also rialto ferry stop).
Veronica' mom met us at the ferry stop and was very helpful . The apartment was well stocked in the kitchen, including some breakfast items. There is an a/c in the central Hall which was convenient (fortunately it wasn't super.got anyway when we went in June). There is a bakery right down in the sqaure which was perfect for coffee etc, and a co-op market is a few minutes walk if you need other stuff.
Overall it worked out great for my family's trip.