Jean is a wonderful and kind old lady, who will try to make your stay perfect while staying at her house.
She came to pick me up from the train station, made wonderful warm breakfast and dinners for me, she took me on a ride to discover around, and all the time I spent here she was nice, giving me advices, but also respecting my free space and time. Her house has wonderful flowers where I could sit during the days/evenings, and for me the location was also just suitable, however it is not that close to the City Center. (But there is a station not too far.)
If you want a personal english touch beside your own discovery of London, I would recommend staying at her house.