Felicity is an amazing Air B&B host! She's very kind and quick to respond to any inquiries you may have. (She's also very understanding if you've accidentally locked the wrong lock for the front door - so make sure you get instructions on how to lock the door before you leave the house for the first time! )
I would definitely recommend staying at her place. The room itself is well-equipped with a kitchenette and all the essentials you may need (including a fan in case of warm weather!)
As others have mentioned, it's about a 10 minute walk to the Latimer Road tube station (Circle/Hammersmith Line) and a 15 minute walk to the White City tube station (Central Line). It's also within walking distance of Portobello Road in Notting Hill.
Thanks Felicity for a wonderful stay!