We visited London on October 17-23. Jasmine's place gave us good accomodation and stay in London! It's proximity to Tesco supermarket (has everything!) is absolutely great and comfortable. It's situated in a really safe, beautiful and quiet neighborhood in London Zone 2. The beds were really comfortable and provided us with good rest after long touring days :) (the rooms are very bright in the mornings, if that matters to anyone).
As for the location, keep in mind that the closest train station is a 10-min walk uphill to St. John's, which we found not very easy to do every time, especially when we were with shopping bags carried. The solution we found was taking either the 21/172 bus lines that stop quite close to the place, and connect to further buses or tube stations (our favourite route was 21 to Borough underground station, and there the Northern Line connects to the city very easily). Journey duration was 45-60 minutes for every side, depending on the vicinty of our first stop in the city of course.
Nonetheless - the place was very compfy and homey, gave us good rest and aminities. Jasmine was very kind, responsive and thoughtful before and during our stay :)