We were disappointed with the stay for several reasons:
1. The apartment is very loud. All the windows face the street that initially seems quite, but turns out to be very loud starting 6:30 am. It literally feels like people are walking on your head.
2. The bathtub was dirty, there is no shower curtain and the drainage was not functioning properly, so during the shower the water would fill up. Since one is expected to sit while showering, it was pretty disgusting.
3. We came to visit the Venice Biennale. It's our second visit to this event, so we know how it can be different. The location though is perfect for this kind of visit. Close to both venues. Also, the apartment is far from the touristic path which creates the feeling that you mingle among the locals.
Over all, we love Venice, so it's hard to majorly ruin it for us, but we were still disappointed with the accomodation.