The flat is comfortable and cosy, and it was great to have the air-conditioning, because the outside temperature ranged between 25°C and 37°C! The communication with Eugenia was very nice and reactive, thanks!
It takes a bus to access the city-center, but there are several bus-stops around the flat, and the trip to Plaza san marco takes about 15'. One useful thing: be sure to download the public transportation application ATAF on your cell-phone: it is VERY useful!