I completely agree with wiffle--this property is awesome. Probably the best city JW Marriott of them all. Quite luxurious, spacious rooms, beautiful bathrooms (nice size--not oversized with dual head shower), excellent executive lounge, fabulous buffet breakfasts with a view, Starbucks in the lobby....
And to cap it all--IMHO the best location in Shanghai, where Nanjing Road West meets East.