We were four persons staying in the Airbnb. The apartment is on the ground floor and you need less than 5 minutes walking to the Mestre Train Station. There are no doors between the rooms (only in the bathroom), but I didn't find it a bad thing. The kitchen is very nice, looks newly renovated and has a induction stove. The beds were very comfortable.
The only downside was probably the communication. After the check out I received a message from the host where she sounded annoyed because somebody used a blanket from the closet. They were two people sharing a double bed who wanted to use separated blankets. The host wrote that it was a "private service closet", however the closet was in the bedroom, it was not locked and didn't have a sign indicating that it was somehow private or for the service. I have stayed in many Airbnbs in different places and it's the only one time I've seen something like that. Normally hosts leave blankets and towels in the closet precisely in case you need them.
The last morning before the check out the warm water was not runing, but it was not a big deal. Besides that, everything worked pretty well.