What the deuce? Where are the power outlets?
I've stayed at the Fairmont in the past, and the Hyatt is fairly comparable. I was in town for a conference, which was hosted at the hotel. 
I generally agree with most of the points of the positive reviewers. 
Ok, some nits - I'm always a little chagrined when large metropolitan hotels assume you know where the heck the check in desk is located without some fairly obvious signage. I arrived at the Hyatt, and wandered around for five minutes before I figured out the front desk was on level 2. Better signage would help. 
Speaking of which, it was very easy to get lost in the Hyatt's multiple levels, especially the conference room levels. The signage was small and easy to miss, despite the effort at color coding each level. 
I had my mobile phone and Kindle with me, both that needed charging, but the King size headboard covered up one side of the power outlets. There were other outlets in the room, but I find it baffling that they would make it so difficult to plug in your mobile devices near the nightstands.
Good news was that check in/check out was a breeze. There was a short line, so I decided to use the check in/out kiosk. After a little fussing with the machine (operator error, not the machine's problem), a staff member materialized and helped me out. Nice. Other than that, I was a light user of services and staff time, but the few interactions with staff were all positive and productive. 
P.S. The internet charges are beyond obnoxious. Guess they found the replacement for their outrageous phone charges of the past.