We enjoyed a wonderful stay with our two-year old daughter in Carmen's apartment. It gives you the feeling of a real, lived-in place, like visiting your aunt in venice. It's far away from the touristy feeling you get from many agency-run places. Makes you feel very welcome.
We particularly enjoyed the terrace & balcony, overlooking one of the canals.
As we arrived (early) and left (late) via night train, Carmen showed exceptional flexibility with regards to check in and checkout. It was almost like getting two extra days for free. That may, of course, not always be possible, due to the booking situation, but again, it makes your feel very welcome.
We can highly recommend staying with Carmen & Mauro.