We had a great stay here. Cristina kept in touch with us before and during our stay, always with a prompt response. Laura, who met us at the water bus stop, was very incredibly friendly and helpful. The apartment itself is located on a fairly quiet street (by area standards) along a canal with a regular stream of gondolas going by. The first thing you will do is take a picture out if the window and send it to everyone you know. It is a short walk from Piazza San Marco and a large variety of restaurants and shops. We walked everywhere we needed to go except to the train station home.
The apartment is up one flight of stairs and through a couple security doors. For the two of us we found it very spacious and comfortable. High ceilings, modern and very clean. Cristina already had the pull-out sofa set up as a second bed for us, it was comfortable. A great space for travellers needing two beds. There is no door on the main bedroom, if that matters to you. No issues with WiFi, hot water or plumbing, which I saw are common issues with other Venice apartments. We were able to make espresso each morning. Noise at night was not an issue for us but expect some as windows are large and thin in Venice and let all the footsteps below in. I suspect this apartment is much quieter than those even one or two streets closer to the square. A great location!