Lovely apartment in a great location. Only major issue is the bathroom shower floods very easily, and the bathroom sink tap is too close to the basin to be useful. Never met the hosts but communicated via Airbnb app and they then had an intermediary who was responsive via text message.
Note that there is a flight of stairs up to this penthouse beyond the elevators—so may not good for someone with a disability (and the elevator weight limits are less than they say inside, you may only be able to get one person in at a time, especially if you have a suitcase with you).