I just read this review on the The Cosmopolitan in Las Vegas and wanted to share it here seeing as it is a Marriott brand hotel (Autograph Collection). It has some great info and tips! She even talks about design "flaws", which... I am pretty interested in and I think she is right on. But she also speaks highly about some of the design features too!
We stayed there last year. They were in the process of updating their Executive Lounge, so it was rather underwhelming. However, the room was fabulous. It was very spacious with a spa tub and great amenities. There are several restaurants in the hotel complex that make it easy to hang out if you do not feel like venturing out too far. The local is also very convenient to shopping and nightlife.