This is a very attractive apartment, newly remodeled in a very handsome way, and super clean. The beds are very comfortable and there there is plenty of space to put your things. The views out the window are very nice in a London-y kind of way, so you really feel like you're having the London experience. The location is convenient to Paddington (where the Heathrow trains come in) and Marylebone train stations, and the neighborhood is upscale and calm. TS Eliot lived in this building! It's an easy walk to Regent's Park. There's a convenient bus from Baker Street to the center of London.
A few things to know: the apartment is on the top floor and there's no elevator, so it would be difficult for someone with heavy luggage. The bathroom is serviceable but tiny. We had some delay getting in because the previous guest did not return the keys, so the cleaners were locked out. But Vanessa we very attentive (over the phone) and after we waited around in the pub, everything was OK.