Very nice place in Fitzrovia for one or two people; one of the best airbnbs I've stayed at in my 10+ trips to London this year. The space is well-organized, it's fairly quiet due to facing to the back of the building and not to the street.
The location is great, a few minutes from Goodge Street station in the heart of Fitzrovia, which is very central but a tad less touristy than nearby Soho or Covent Garden.