Trust all the 5-star reviews Stefania received---she is the best! and the apt is brand new and very clean.
The mobile wifi unit she gave worked very well all over the city. Just remember that you may have to restart it occasionally (hold down the power button until lights go out) if you find that the connection is bad. Also, you want to bring a USB charger unit for it if you plan to be out all day.
No breakfast but I don't need it anyways.
<1 min walk to a water bus station (Silvestro) but with a couple tricky "Venetian turns". Stefania will come to meet you at the station though, so no worries.
Whatever Stefania recommends, do it. I enjoyed everything she pointed me to!
(one small thing: a better/new coffee maker or hot water cooker would be nice.)