Diana's place is perfectly clean, fits the description to a T and is very convenient for anyone who has to do business trips in London and around (like Cambridge) due to being within walking distance of King's Cross rail station.
Diana is one of the nicest hosts I have ever encountered on AirBnB. She is communicative, attentive to details and accommodating.
There is no doubt in my mind that this place will be at the very top of the list when looking for places to stay in London on my future business trips.