Vivien is offering a nice room in a very safe and nice neighborhood. She makes you feel very comfortable and as you were at home, and she's very welcoming, smiling and remains positive at all time! And she can help you with pretty much everything.
The house is not far from the train station (15 min max if you want to walk) and you can be in London within 20 minutes by train. It's fast and you will enjoy the journey everytime.
It's a very good opportunity to enjoy your (sort or long) stay in London.