We visited the China World Summit Wing just a few months after it had opened in 2010, and just about everything went wrong. For a high-end hotel in a high-end chain, it was clearly not ready for prime time.
We returned for two nights in October, 2012. What a change! The facility itself was flawless, but most importantly the service was now at a very high standard. I had arranged for an airport pick-up and I was met at the jetway by a pleasant fellow who guided me through immigration and led me to the waiting Mercedes. A nice cool towel and cold orange juice awaited me in the back seat and the trip to the hotel, despite some slow traffic, was effortless. I was met at the hotel entrance and taken directly up to the suite. (The new electronic/iPad-like check in is very cool!) Everything was in order.
Throughout the two-day stay everything worked and the staff always responded to any requests with a smile and a can-do attitude. Room service was excellent, and there's a wide selection for breakfast. I should also mention that the beds are the most comfortable I've ever experienced in a hotel.
All-in-all, this second experience was like staying at a completely different hotel from our visit two years ago. From this visit, I'd say that the China World Summit Wing is now clearly up to the standard of an elite Shanghai-La Hotel.