Marcello's apartment was perfect! It had everything we needed and then some, was spacious and REALLY conveniently located steps from a vaporeto (water bus) station. The apartment has 3 floors with somewhat narrow and steep stairs but it wasn't a problem for us.
Marcello greeted us at the vaporeto station (we got a bit lost on the way so were an hour late!) but he was super friendly anyway. Gave us some good advice on where to eat, the best place being just down the street.
I would highly recommend this place to anyone who wishes to travel to Venice!