Just finished my first stay at the new Mexico City Hyatt. I would say all in all they have done a nice job with a quick transition. I got an upgraded room in the Concierge tower. The room itself was nice with some high tech gizmos.

The one bad thing was that as a diamond member I couldn't check in at the lobby counter where there were three associates ready to take care of me. I was instead ushered to the 38th floor vip welcome lounge where a single staffer was taking care of four guests ahead of me. This was intensely irritating, and there simply wasn't an option to head back to the lobby.

Also, the concept of the concierge is cute, but these are nowhere near the level of concierge you would expect in a St Regis - then again, in fairness, the rates weren't at that level either. My Concierge failed to follow through on a couple of simple requests. I will be generous and chalk things up to transition pains.

Other than that the food and bev was fine, the rooms and bathrooms of high quality and the location unbeatable. I will return.