My first previous stay in this hotel was marred by several incidents, like having access denied to the Club rooms main privileges (22nd floor swimming pool, alfresco chill-out area, for instance), and a not-so-great service, most of these incidents being caused by a film shooting that disrupted the hotel services.
In the feedback forms sent by the hotel's management, I stressed some of these disappointing aspects. The management reaction was extremely satisfactory : they acknowledged the problems, apologized and offered me a second chance.
I must admit that my second stay there was pretty much what I could expect from a hotel with great standards : flawless and extremely polite and attentive service, very clean and pleasant room, and so on. A great stay.