My stay at Alexandra's place has been the best experience in Airbnb and in London.
The place looks much better than in the photos, the balcony is on the fifth floor/top floor facing East, which really helps chasing the sunlight. It has everything in the kitchen for cooking and the bed quality is superb; the quality of the linen, pillows, mattress were like a 4 star hotel.
The flat is two blocks from Colindale tube station, with shops and places to eat but still in a calm and tidy neighborhood.
Alexandra was the best host, very kind and accomodating to my late checkout and needs, she made sure I was able to have a smooth stay and check in.
I would definitely recomend this place and come back!