Didn't want the hassle of our "convention's" hotel, so looked up Marriott / SPG properties on The Strip, as I try to stay in their properties first. Found The Cosmo listed as Top Notch on their reviews, then checked Trip Adv. as I always do before booking.
I really enjoyed the peace and plushness, and their Superb Staff. My five days their were everything I asked for, and that I expected. (Even got away from my seminars for a little sun and swim at their very nice pools!). Room, common areas, the whole hotel was excellent. Will stay here again.