I've stayed at Vivien's place for a month and it was truly a precious experience! Vivien and Gena are respectful of your space, while being caring as a host and warm as a friend that you could enjoy being around and having chats with. (Plus the cat is super cute!)
The area is safe even at night and have almost everything you need. The supermarket is only 5 minutes walk, and you can also find nice cafes, markets and parks around easily.
I was looking for a job and a new place to rent while I was staying. It is definitely a good place to stay if you aren't planning having tight sight-seeing schedule in central London but starting a new life in this city.