My girlfriend and I spent four days in Sandra and Massimo's appartment in April. They have been very gentle and helpful to us, providing useful tips over email before our arrival. In Venice, Massimo met us at Rialto station and took us to the appartment (a 5 minute walk). They both made sure we had everything we needed to enjoy our stay: information about the city, advises about restaurants, food and drinks for breakfast and meals (tea, fruits, pasta, orange juice, bread, etc.).
The appartment is clean and quiet with a great kitchen. We recommend it to any couple looking for a simple and practical place to stay in the heart of Venezia.