We really enjoyed our time at Fabio's apartment in Venice. The check-in went very smoothly and we followed Fabio's instructions and rang the apartment managers when we arrived on the train and they met us at the Salute stop to walk us 3 minutes to the apartment. The apartment is clean and spacious and probably bigger than it looks in the photos. It easily accommodated our group of 5. We enjoyed having breakfast (and occasional dinner) in the courtyard which is a great added extra.
We loved the position of the apartment in Dorsadura where there was much less foot traffic and it is great to be staying on your very own canal in a very picturesque location.
We followed the advice of previous residents and used the shopping trolley to walk to the grocery store at Zattere. We were there for 4 nights and would advise against buying the vaporetto tickets - the apartment is in walking distance of everywhere. It is 3 minutes from Salute and 5 minutes from the Accademia bridge and 2 minutes from the Traghetto crossing of the Grand Canal. The Vaporetto was expensive and ridiculously crowded every time we tried to use it. We did catch a water taxi from the train station which cost us 60 Euros for 5 with luggage...but it was a fantastic first view of Venice... and the Salute stop is right at the far end of the Grand Canal so it is a nice long ride (negotiate the price first - we saw some others paying much more for shorter trips).
Communication was great with Fabio. We had some trouble with receiving our emails and when I rang him everything was quickly set to right.

The best advice we can give to others thinking of staying at Fabio's apartment is to just do it. If (when) we come back to Venice we will certainly stay at Fabio's again - we really enjoyed it. Absolutely fantastic!