This review is divided in host, facilities and location qualifications.
1. We hand little contact with her because we were usually out exploring the city. Nonetheless, whenever we found each other, she was very attentive and helpful. She advised us about the transportation, house, and even messaged us to find out if we managed to return home on the first day. She is definitely a warm and kind person.
2. The house is extremely clean and neat. Everything is organized and in good state. This definitely corresponds to her characteristics and demonstrates that see cares not only on providing a service but with good quality. Furthermore she offers towels, hairdryer, shampoo, tea, coffee and others essential utensil that are very helpful (and space savers on our bags). We felt like home.
3. Easy transportation for all important places. Noticing that we were tourists and definitely did not use always the best route, we usually took 30 minutes to arrive somewhere. London has an excellent underground transportation and there was a bus stop that took us to two different stations right in front of the house.
Everything was great and we loved our stay. In my strict rating system, based on the previous information and cost, I would give an overall grade of 9.0/10*.

*this is a very high rate in my point of view, since a 10 implies edging perfection.