The flat is beautifully designed and very elegant. I stayed there a week, working from home and really enjoyed everyday, quite, bright and comfortable. The bathroom is very nice! The location is a little bit out of central London but access is still easy.
A bit of a bias opinion, but I would say that the only downside is that the flat does lack many of the things you would need for a longer stay, that you may find in another Airbnb.