Great location but levaes a lot to be desired
I recently completed a two night stay at this property in a corner suite (X04 units) and was slightly disappointed. I came in excited to try this new property and the unique pied-à-terre styling after many great stays at other Hyatt properties including the two nearby Andaz locations and Park Hyatt locations worldwide. Upon arrival, the front desk area is incredibly small without any real space to wait or desk to speak of. Check-in was fairly efficient although no assistance with my luggage was offered. 
The room was fairly well laid out with a separate living and sleeping area. I found the room to be adequately sound proofed despite the fact that the bedroom is all glass. Bathroom was disappointing especially the weak shower pressure. Living area had a unique kitchenette with microwave, honor bar, Nespresso machine, Fisher & Paykel drawer dishwasher and a display of eight overpriced mini bottles of cheap wine. 
The second floor contains the Lexicon Lounge which is the heart of the hotel. There is an espresso machine and water available around the clock and that's about it. Mini muffins and petite pastries are available in the early morning in limited quantities, hard pretzels and assorted cookies in the afternoon and cheese in the evening. Not quite like the Andaz with complimentary wine, juices and other refreshments available around the clock. The fitness center is adequate and contains treadmills, recumbent bikes, and ellipticals (all Life Fitness with integrated LCD TVs) and a combination unit in the adjacent strength room. 
Overall I was disappointed with this hotel and will stay elsewhere in New York. It's worth noting this property is a category 4 in Gold Passport (unlike other NYC properties) so it may be a good value for points redemption or annual Hyatt card free night award.