I stayed in London for a month at Villi's place. She was an amazing host and her family was polite and welcoming. She was very flexible with my checking and checkout and communication with her was easy.
I have to mention, thou, that the room and the house were a bit disappointing due to the lack of proper reviews of previous guests. Many people were talking about the accomodation with really positive comments and this is why I booked it.
However, as soon as I got in the house and my room there was a pungent smell of mold. I mentioned it to Villi and an humidifier was placed in the room but did not help much. The house, as well as my room and the bathroom, could have been cleaner.
Location was ok. In 15 minutes you can be in Canning Town (Jubilee Line).
If you are staying for couple of nights in London it is a good deal, but for longer stays I would choose a different accomodation.