3.5 out of 5: A comfortable factory
We recently stayed at the Hyatt Regency for a wedding (I'd have liked to score this hotel 3.5, not 3, but TA does not allow for half grades). It is well-located, with comfortable beds in spacious, unremarkable rooms and friendly service. We were given a decent rate as well. Yet there were 13 other wedding parties staying at the hotel, and I shudder to think what it must be like during conventions. The place has the feel of a factory, with long lines for check-in and check out, loads of guests, and loads of traffic. The big, cavernous lobby with an atrium and escalators leading up to the check-in desk was noisy and chaotic at all hours. There is nothing intimate or restful about this hotel. Granted, it's a giant property and part of a chain, but big hotels need not make you feel as if you are smack-dab in the middle of a convention center all the time.
What's more, arriving in our room, we discovered there was no minibar or fridge in the space allotted for one. Nor was there a coffee pot in the coffee maker. Normally, this is not a big deal, but over a wedding weekend with lots of drinking & toasting, it's important to have both cold water & coffee in a room. 
When we called downstairs, the front desk assured us that both a mini-fridge and a coffee pot would be installed right away. None arrived. When we checked downstairs later, we were told that we'd been misinformed. NONE of the rooms had minibars anymore. They had all been removed and were "being re-thought." We then received a phone message informing us as well that there were no coffee pots for the coffee makers -- single-packet servings of coffee were provided instead. NONE OF THIS WAS A BIG DEAL, but it was annoying not to have been told any of this in the first place -- and then to wait around for items to materialize. A small note in the rooms explaining the situation would've been helpful to the guests and the front desk staff alike.
Of course, the Hyatt's size is precisely what makes it possible for large wedding parties to stay together in the same hotel at a decent rate over a busy weekend. This is no small feat. I just wish that it all didn't feel so crazy.
 If you need a venue for a large group, this hotel is probably a good bet. Modern, clean reliable. But if you're a couple or a small group who likes a bit of calm at the end of a day of travel, I'd say: Look elsewhere.