Ck's place was awesome! Although it's close to all of the fun things to do around Xinyi, the location is pretty private and peaceful. Also extremely easy to jump on the MRT (metro) for getting anywhere in the city, and close to a great new coffee shop (Curista) for the coffee snobs like myself.
Ck was very responsive and even let me check in really early since I ended up with a red eye flight from the US.