Bad Bad Bad
If you are used to upscale hotels do not waist your time! feels like being in a shopping mall (1300 rooms), as i usually stay in Park Hyatt hotels i can notice a huge difference between Grand hyatt and Park hyatt! 
positive: good location and friendly front desk staff.
Negative: small rooms, tiny bathrooms, no free hifi, and dirty rooms (huge problems of housekeeping) 
Will never come back