Anna's house is in a good position to move and to reach central London, you have the Piccadilly Line at less than 10 minutes by many buses that run just some steps from the door, even avoiding the Zone 3 underground stop.
She is a nice and polite person, always available for a chat while having breakfast or for some advices to go around the city, what to see and how to do.
The room she gives you is quiet and you can have your privacy, or if you like, her superlovable cat can come to visit you on the bed :D