We enjoyed our 5-day stay in Silvia's apartment very much. It is a beautiful, well-designed, quiet and comfortable place in one of the few parts of Venice that is not deluged with tourists. For two people, it felt airy and spacious. Everything went smoothy for us. For two people, the apartment felt airy and spacious, and we were very happy to have a washing machine and kitchen, not to mention excellent a/c. Although Silvia is not there, she was attentive to the logistics of our arrival in advance via e-mails and phone. She sent instructions and recommendations for local restaurants and there were copies in the apartment, along with guidebooks. Her representative Vicky was excellent and made check-in a breeze -- she was nearby during the day and always reachable by phone, but we never needed her after check-in.
The adjacent Hilton hotel is an essential component, for the wi-fi and boat shuttle and concierge-services (all free), not to mention a roof-top bar & various eateries.
We know Venice well and enjoyed the experience of living on the Giudecca. It must be understood, however, that it is off the beaten track, so getting to the famous Venetian sites takes some thought -- for instance, for the schedules of the Hilton shuttle and the vaporetto boat bus, which has a stop nearby. (It is very worth it to buy a 3- or 7-day vaporetto pass -- ours paid for themselves by the second day.) For us, the peace and calm of the location was worth it all. And we heartily recommend the Altanella restaurant a nice stroll away.