Interesting question Amanjunkie. I'm inclined to say that so far my biggest disappointment would be the SFO Mandarin hotel. I won't be surprised however, if some flyertalkers will disagree with me as experiencess tend to vary. My stay there last May did not start off very well with reservation errors and apparent "duplication" I had no idea about. The situation was resolved only after some arguments. The room and the view, of course were both amazing (Bay view room) I have to say, but the disappointment continued with the service. I felt like my room was totally isolated and forgotten with room service cart at one point left parked on the room for an entire day. I did not receive any turn down services, until the second night when the house keeper at 11 pm entered my room! I was already sleeping and was totally surprised to see a shadow creeping in by the sitting area with a basket. It was disappointing enough to arrive in a room totally ignored, and then to be disturbed from my sleep late at night was even more annoying.

Finally, on the second day, after doing some shopping at the nearby stores, I went back to the hotel and stopped by at the reception and requested the business office to be opened up. The reply of the lady with that look of almost disgust was: "Why, are you even staying with us?" I did not report any of these, since I do not enjoy pointing out problems like these on hotels of this calibre. With the price that I pay on times i get to saty on luxury hotels, I expect nothing but the best. Atleast, now I know which property to avoid and not spend my money on next time I'm in San Francisco.