This is a nice flat in an excellent location- just a few minutes walk from Notting Hill Gate tube stop. As other reviewers note, there are a lot of stairs, but the little workout just counteracts all the pub trips you're sure to make.
The space is nice, bigger than other most AirBnb studios. The bed a little uncomfortable and the shower head is not great, but there is a heated towel rack! The space was clean and the kitchenette nice. The wifi was solid.
You can hear your neighbors so be sure to bring ear plugs.
Overall, good find in a great location.