I stayed in Maurizio&Francesca's guestroom with private bathroom together with my boyfriend for 3 nights and it was great! The room is located next to the Vaporetto stop San Toma on the calm side of the Canal Grande. There are some really lovely restaurants in that part of the city with that offer fantastic food at good prices.
The room itself was exactly like on the fotos. It was very clean and perfect for a stay for a couple. Mauricio&Francesca even provided two bottles of water and some snacks for breakfast. We did not have direct contact with the hosts as we could check-in ourselves.