I stayed at Rosario's place for one month and I can definitely recommend it! Rosario and her husband are really nice and their flat was always tidy and clean. The room is a little bit small but it has everything important in it (even a fridge ;) filled with juice and cheese and there was a big bottle of water as well). Stockwell station and supermarkets (Lidl, Sainsburys) are nearby (3 min walk) and the Victoria station is only three underground stops away which takes you into the heart of London in no time. I enjoyed my time in London and thank Rosario and Rafael for having me at her place!