We spent 3 nights in Fabrice's apartment (2 adults, 3 kids). Fabrice is a great host; he was not there, but we communicated a lot via instant messages. Everything was extremely well organised, the description very clear and precise, check-in and check-out went very smoothly and Fabrice had a lot of tipps for restaurants, which was a great help.
The apartment is very cozy and very nice. It is very well situated: very close to the railway station. When you see all the people carrying their trunks in Venice (a lot of stairs), you understand that being next to the railway station is clearly an advantage. Then, the Cannaregio is very close, too, which is a very animated quarter of the city. You can reach all places walking (30 minutes for Piazza San Marco), or you take the vaporetto which is 5 minutes walk from the apartment. So much for the location (which is absolutely great).
The equipment is great and the apartment is nice and cozy. We did not spend so much time there (after all, we came to visit Venice), but we cooked the diner and we had breakfast there, and everything was working very nicely and was very easy to use. I can only recommend this apartment.