This was our first time trying out Airbnb and it was certainly a very nice experience. The whole booking process was fast and Caroline was very open to guide us through the steps.
The day we arrived our plane landed about an hour late so that meant we were also late at the apartment. Yet Virginia, Caroline's liaison, was nice to wait for us, being very welcoming.
As far as the location goes, it's in many ways perfect: beginning with the fact that it is on a direct tube line (Piccadilly Line) from the airport (although the trip lasts over an hour); it's a close walk to the tube which means you're in the center in about 15 minutes; it has supermarkets pretty close by, the neighborhood seems quite safe and it is well lit at night. It's close to the train tracks, but the bedroom is on the other side and the isolation is decent, so the noise wasn't an issue for us.
As for the flat itself, we loved it. It's quite homey and it has everything you need. The bedroom has a large and comfy bed, and the kitchen is well equipped. Given that eating out in London can by quite pricey, it doesn't hurt being able to cook your own breakfast or dinner.
We also enjoyed that it has some personal touches as well, rather than what you'd get in a hotel. It was lovely seeing Caroline's travel map in the kitchen or taking a peek at her cool books.
For us it was one of the best travel accommodation in quite a while, and if we come back to London we might try to book it again.