This is a difficult review to write because this apartment is generally very good and is in a wonderful location in a great neighbourhood. But the lack of communication and assistance when I had a real problem with the amenity of the apartment was incredibly disappointing. I credit airbnb with stepping in to resolve the issue and thank them very much. In short, there was stagnant water stuck in gutters outside the windows which meant that opening the windows resulted in a dreadful smell all through the apartment. This may not be an issue in winter, but in a record heat wave in London it made it very unpleasant. I am sure the host and building management will fix this at some stage but i would recommend anyone thinking of renting the apartment should ask if indeed it has been resolved.