Margaret's place is very nice and cozy. It has two bedrooms and a living room for a reasonable price. Location is quite good, but not very close to the underground stations (closest one is around 15 min walk), so bus is your best option.
We had a problem with the shower which was quickly fixed by Margaret, who was very kind and eager to help and make our stay as good as possible.
Overall I had a very good experience staying at Margaret's place and I'd definitely recommend it if you look for a good value for money and a kind and responsive host.