We spend a nice moment in Venezia. The area is nice and safe , and good restaurants !
The flat has a very good situation at 1 minute walk from the bus, and then 15 minutes to Piazza Roma.
We didn't meet the owner , but it's a self checking with a youtube video for the explaination.
As mentioned by other travellers, cold water in bath room when other people using hot water ...
Otherwise it's a nice place to stay.