We met Giacomo and Giulia at the nearest boat stop by the apartment and they guided us to where we were staying. As it was our first time in Venice this was especially helpful! The flat was very nice and in a great area, so we were able to walk pretty much everywhere exploring all the nooks and alleyways. We were only in Venice for a very short trip and didn't need to get in touch with Giamcomo and Giulia for anything other than check-in/out, but they were very easy to reach via text message and very easy to talk to.