Cathy's house is a in a great area, and like she stated, near 3 different tubes (Drayton is literally a minute away). You can get to most places in a short period of time (i recommend using City Mapper to let you know different paths to take) She advised me on places to go, the kitchen was stocked with all sorts of tea, and the room and bathroom were clean.
It is a very cosy house and even at night you can sit in the living room and read a book. Even when i would come back late at night the area felt pretty safe (as a young woman).
If you just need a couple days to stay in london and close to everything in the city, this is the place for you. Could not rate any higher, Cathy is such an amiable person.