I had a lovely time in Max and Billie's studio. I lived there for more than a month and I think it is perfect for one person. Very close to Notting Hill Gate Tube Station (4 minutes walking distance), it is furnished with every essential thing you need for a confortable stay. Very very quiet during the night, in the morning you hear the birds chirping. FYI, the bed in the mezzanine is not a real bed: it is made of two mattresses one above the other, for me they were firm enough, but maybe they are not good for all sleepers. There is a ladder to climb to reach the mezzanine, it was fine for me but it could not be the best if you don't like stairs.
Max and Billie were very kind and collaborative, they always helped me everytime I asked something, and very quickly. Highly recommended.