The key thing you should know about this place (no pun intended) is that the front-door lock is fickle. Sometimes it works easily but occasionally you'll be turning and turning the key for minutes on end. DON'T GIVE UP--you will get in eventually.
Something else that might not be to everyone's liking is the sporadic wafting of cigarette smoke. (It varies based on what it happening with the house's other occupants.)
On a more positive note, Rotherhithe is an area worth getting to know--with a history as rich as central London's!