Excellent location! Never had a journey over 30 minutes (and often under 15) to get every major attraction I wanted to in the city.
Location is quiet, clean, in a very nice area of London. Not a lot of nightlife, but if that's what you're looking for, very short tube away - lots of theatres/bars within a 15 minute ride . Bed was comfortable, though keep in mind the room is best suited to one traveller. Katherin is a lovely host, and generally out and about but available to answer any questions.