Marzia's place is a great studio supplied with everything you might need while staying on venice. It is located on the quiet canal and sometimes you can hear gondoliers sighing operas to their clients, which I found very romantic. The apartment is on the first floor in a hidden courtyard, one of those Venetian hideaways which are hard to find but we were shown the way by Marzia's friend. We had no problems in communications, someone always was available via WhatsApp.
Also, was very convenient to explain our friends where we were staying and finding a meeting point - Basilica Dei Frari, which happened to be one of the most beautiful places in Venice and a must see as well. You can find a vaporetto stop in just 5 minutes walking, which is also convenient to get from the train station.
Highly recommend this lovely apartment for your stay in Venice!