Everything was clean. Bathroom and shower are great, and the kitchen has everything you need (plus the included light breakfast was very helpful). The room was clean and very big, and the air conditioning worked well.
There is also an amazing bar/restaurant just opposite the apartment, which does good wine and food at a good price. Very authentic.
However the bed was quiet hard and uncomfortable, and the location isn't as good as it seems, as the bus to Venice from Mestre drops you off at about a 25 minute walk to the centre still.
Overall, good place.