We(parents,sister&myself) stayed at Casa Sofia 3-6/May for 3nights and we really enjoyed our holiday there.
The host Paolo was very kind even though we arrived quite late evening and our departure flight was delayed and let us stay extra hours there:)
The apartment is well located in the middle of touristic area and the famous restaurant is just downstairs!(forgot the name, but with blue color tent)
My parents used master bedroom, my sister used sofa-bed in living room and I used double-size bed in attic. It was very comfortable and everything was neat.
The only thing we had difficulties was,, the flat is located on 3rd floor, and we had quite heavy luggages due to long period of travelling. But just like other buildings in Venice, we understood that most of old historical buildings don't have elevator.
I highly recommend this place and I'd like to say "Thank you" to the host Paolo.
Hope to see you again in Venice!!

Ciao,