There are a lot of great things about this apartment, so let's start there.
Location couldn't be better for seeing the Venice sights – 2 minute walk to Piazza San Marco, 5 minutes to the Vaporetto stop. The apartment is large and airy with lots of windows and nice views – we loved awakening to the sight of the sun rising over Venice rooftops. The bathroom is good sized and the shower is very large by European standards. The furnishings are eclectic, attractive and very comfortable. And, we found a very nice restaurant (da Cherubino) right across from our courtyard.
Two factors for us made this a "3 star" and not a "5."
First, it is a fifth-floor walkup – 76 steps from building entrance to front door, and no elevator. Nothing wrong with that, BUT ... it is something that should be clearly stated in the listing, and it is not mentioned. Older travelers or those with disabilities could be very rudely surprised by this.
Second, no web connectivity of any kind. This was not a surprise – "Internet" was clearly not a listed amenity. But really – it's the 21st century. What traveler doesn't need the web to check restaurants, summon a cab, check email, etc.? With this apartment, you have to schlep around the corner to a little cafe (when it's open) for WiFi, and that just doesn't cut it.
But, if you are young and healthy, and you're willing to take a chance that your phone will get enough of a data signal to take care of your needs, we whole-heartedly recommend this lovely lodging.