We had a nice stay in Martina's flat during our visit to Venice. The location is absolutely perfect, especially for first time visitors such as ourselves. An easy 10 minute walk to St. Mark's Square in one direction and 20 minute walk in the other direction to the Rialto Bridge. There are a couple options for nearby water bus stations, though we really didn't use them much because it was much more enjoyable to walk the city.
Martina's flat was just as listed, and it was very clean upon our arrival. Enrico met us at the water bus station and showed us the way, as well as showing us the amenities of the flat. Martina was very communicative throughout the process (from booking to check-in) and was very thorough with information.
The highlight (and the reason I booked this property) was being able to look out the window and watch the gondolas go by each day. It seemed to be the canal that the singers chose to sing in because it was almost non-stop serenading all afternoon! Lovely when you want to watch and listen, but maybe not so great if you're trying to take an afternoon nap (haha).
We had a wonderful time, and we would love to stay here again. Tip: bring bug spray! Since the flat is located alongside a canal, there were quite a few mosquitoes (who feasted on me), especially if you're opening the windows often to enjoy the gondolas going by.