Marcello & Luigina are excellent hosts.
Their apartment is small, but is in an excellent location, only about 200m walk from the Guglie bridge and 2 ferry stops,
Despite the apartment being only a few meters away from a busy shopping street we found that it was surprisingly quiet.
The ceiling heights are a little low, which might be a problem for particularly tall people (say over 6' 2" or 185 cm).
Their is a great supermarket in a converted theatre close by, and many options for pastry shops, restaurants and bars.
We stayed for 6 days, and found the apartment to be an excellent base to explore Venice from.