It was a perfect place to spend a night in the middle of Venice! Stunningly central, and with the directions of Elena easy to find. For German speaking people, I recommend the app 'Venedig Reiseführer' as you can download offline maps and it shows the house numbers (!) which is helpful to find exact places. However, here are the exact coordinates of Elena's air b&b flat. Simply copy-paste them into your google maps and you can locate the place in advance! 45.43969, 12.33663.
Highly recommend this place!