Neat En Suite Room Wanted

I am a clinical coding analyst working at Kings College Hospital, Denmark Hill. I spend most of my weekends in Scotland, where my family and home is.
I am very neat and tidy individual and would expect the same of a flatmate. I am easy going, courteous and respectful of other peoples personal space.
I would prefer an ensuite room, but a neat double room in a 2 or 3 bed house would do. I do not mind sharing with one, or 2 flatmates.
It would be advantageous if the property is a walking distance to a National rail station.