I assume we’re talking paid business travel and not private vacation? For private mine is a pretty dull and safe list. These are I places I usually stay at and happy with, but I can’t say I’ve tried more than 2-3 at each location. Nothing spectacular, but good location, good service, descent (smokefree!) rooms, good bed, good breakfast.
Shanghai - Radisson New World
Ningbo - Sheraton
Ninghai - Jinhai New Centrury
Taipei - W
Taipei Airport - Novotel
Taichung - The Landis (formerly Hotel One)