We are a family of four (two tweens) and this was the 2nd stop on our first trip to Italy. Staying in this lovely apartment just one street over from Piazza San Marco made things so much easier (four days). Venezia is a walkable city and the location made seeing all the places on our checklist easy.
Getting to the apartment from the train station on a vaporetto was straightforward. The apartment was better than the photos. Windows in the living area & main bedroom look down on a busy street, but you can see a little of Basilica di San Marco from one of the bedroom windows. The beds were comfy with plenty of pillows and towels, and there is air conditioning and a washing machine, which I was grateful for after traveling with three males for over a week by the end of our stay. The refrigerator is typical for Europe, but the kitchen was bigger than expected. The dining table was the perfect place for a cup of coffee and a sfogliatine before heading out to see the sights in the morning. Bonus: two bathrooms, one with a shower (the other has the washer).
Mario was quick to respond to emails and provide needed information prior to our trip. We texted Paolo, who would meet us when we arrived, a few days before arriving to confirm time and location. We took Vaporetto 1 from the train station to San Marco and met Paolo at the clock tower. He walked us to the apartment from there, gave us a tour of the apt, and answered our questions (and was quick to respond when we had an a question later in our stay).
We didn't find these a problem, but be aware: like it says in the listing, the apt is on the 1st floor (2nd for US travelers), there is no elevator so you'll need to carry your bags up & down the stairs. There is a general hum of activity from people outside plus bells all day and a restaurant directly below that closes at 11p but it didn't keep us awake. There was less noise overall in the room not facing the piazza.
The location is great and the apt is comfy. You can spread out a bit, unlike in a hotel, and you don't have to eat out for every meal if you don't want to. We would definitely stay here again if we returned to Venezia and it was available.