I have recently attended an international conference hosted by Hyatt regency. The events were held in main hall. The hall itself deserves special attention. It has got a massive display and brillant illumination. Other than that, we didn't have any issue with parking which is problematic in many parts of Tashkent.
One of the best Hotel in Tashkent if not the best, the staff is very tentative, the rooms are very spacious and comfortable. I have been there twice and never got disappointed