There is no sound isolation and being on a busy road the noise of the traffic is completely unfiltered all night in the room. In addition there are also no darkening curtains and the street light streams in bright all night.. one could read by the window. "shared bathroom" on Airbnb leads one to believe that you share it with the host, but this is place has 4 rooms which could mean you could be sharing the bathroom with 8 other people. That said, the bathroom was never found dirty.
The most significant negative aspect of my stay was that the room has a mould problem quite visible in the corner of the ceiling and on the "blinds" (which don't really serve to darken the room). I had a runny nose and headache every evening- with the sound and light situation basically sleepless three nights. Would not recommend this despite the great location.