Catia is a kind host. She is easy to communicate with and quick to answer any inquiries.
There are actually two rooms: One's upstairs and the other is across the backyard that's detached from the house. I was given the latter. The advantage of the one aross the yard is the extra privacy, and most of what you need is there (bedroom, a washroom, sink, microwave, etc). You can go in the house if you need the stove, oven or the laundry machine.
This part of Croydon I admit is rather empty, but there's a leisure centre in walking distance (15 min), and the tram stop is 2 minutes away, which you can take to Wimbledon or Mitcham Junction.