From my experience, many Airbnbs in London appear overpriced, and their photos and descriptions can be less than accurate. There are often low level annoyances caused by elements of the accommodation, like plugs that get stuck in washbasins, tricky check-in arrangements or poor lighting in public areas.
None of this applies to Warren and Erica's flat, which is modern, clean, secure and represents great value for money. For our purposes (we were in London chiefly to watch cricket at Lord's), the location was outstanding, but for anyone wishing to explore London more widely, the location would still be excellent - equidistant between two tube stations (Maida Vale and Warwick Avenue), and with a wide range of shops and restaraunts nearby.
The check-in process is very easy (although I was fortunate enough to meet Warren and Erica, who helped me with it), and the guide to the property provided both on Airbnb and in hard copy in the flat, is the most comprehensive and accurate I've come across. It's clear from this, and from the fact that they provided tea, coffee, cereal, a couple of bottles of water, some biscuits and some tourist literature, that Warren and Erica take being Airbnb hosts very seriously and are prepared to really make an effort to welcome their guests.
Inside the flat there are two decent sized bedrooms with good beds and plenty of storage space, a kitchen and living area, and a bathroom which is small but which has an excellent shower. A minor inconvenience is the fact that the flat is on the third floor and there's no lift, so it wouldn't be suitable for anyone with mobility problems or unusually heavy or bulky luggage. Fortunately for me, Warren carried my case up to the flat, but I'm aware that this 'service' may not be available to everyone! It's fairly noisy at all times, but this close to central London you'd be naïve to expect anything else.
All in all, I really enjoyed staying at the flat, and I hope to do so again.