We stayed in Piero's place for 11 days and had a good time overall. The location is great, nice and quiet and close to the Arsenale and Giardini for the Biennale. The loft space itself was great, with wooden beams and traditional furnishings and clever use of mirrors and partitions to make it feel spacious. The balcony overlooking the canal and bridges was fantastic. I especially liked the details like the stained glass and the painted Carpaccio details and Venice scenes on the walls. The kitchen area is small but fine for making simple pasta dishes.
We had some issues with quite a lot of dust in the bedroom which caused allergic reactions. Piero was apologetic and sent the cleaner around again but it was still quite dusty behind the bed and on the beams. It was manageable with medication but it would have been nice for that flat to have a deep clean before we arrived considering the length of time we were staying. The shower is inconsistent and alternates between hot and cold every 30 seconds or so but apparently that is just life on San Pietro - probably not a problem for a few days but gets annoying. Finally, if you were a group of three be aware that there is not much privacy between the rooms as they are just partitioned and not to the top - not a problem if you are a couple though.
A very nice place for a short, quiet, romantic break - could be perfect with just a touch more attention to detail.