I've been to Taipei twice this year, and I've stayed at the Grand Hyatt on both times. Location is perfect, it is beside, or walking distance from Taipei 101 tower. Service was great. However, the regular rooms are dated, especially the bathrooms. On the other hand, the grand deluxe's? bedroom that I had on my first trip was nice.
Im planning on my next trip there again, I might want to try a boutique hotel, such as eclait. Or maybe even try the new Le Meridien or W when it opens on schedule.
rgds,