I stayed at the Westin last December and as a Gold, did not get an upgrade. The hotel was pretty full from the look of things, but I didn't spend much time in the room so it didn't matter much to me...too busy going out eating! The rooms were comfortable and the service was friendly and efficient (I'm a Mandarin-speaking ABC if that matters at all). I chose the Westin over the Sheraton because it was much closer to where my family lives. I think the Sheraton was cheaper but the construction scared me off. Although I got an email the other day saying the Sheraton rennovations are complete. It offered a rate plan called NEWLOOK:
For only TWD4600 per night, enjoy the luxury of a Superior Room, plus earn double Starpoints, one buffet breakfast and receive a memorial gift, when you stay from now through September 10, 2005.