Hi - Last July I stayed at the Grand Hyatt. I booked a room on the club floor. The hotel was simply spectacular. The view from my 79th floor room was well, epic. I probably won't have much opportunity in my life to sleep on a higher floor! The room was very stylish and the bathroom had a cool multi head shower.
The lounge also had a great view and the snacks and breakfast were fine. There is no shortage of delicious inexpensive food in Shanghai.
The location is very out of the way - I spent most of my vacation time there at my uncle's service apartment located near the Ritz Carlton. Much more interesting and fun location.