We didn't end up staying in Janet's apartment for our visit to Fremantle so cannot comment on the amenities or comfort of an overnight stay. For people visiting it is worth noting that the apartment is within a large (over 100) residential apartment building and as such you are able to see/hear quite a few other people moving about. The black couch as pictured is not what was in the living room rather it was a 2 seater couch and seperate single bed. It may be worth confirming the furniture layout if this will be important to you.
It is handy to have a carpark on site as carparking would be fairly expensive otherwise.