Just spent 3 nights at the Vdara.  We really liked this hotel a lot.  The hotel is smaller than the other resorts around which makes it quicker to check in and also short walks to the elevators.  Great trendy decor throughout the hotel.  We had a corner suite on the 5th floor.  Had a great view of the street and city center complex.  Staff was friendly and service was fast.  Fridge and Kurig coffee maker were a plus.  Only downside to this hotel is it is on the backside of city center and getting to the strip is a bit of a chore.  Not having a casino was not a big deal as Aria was a 2 minute walk away.  My only complaint that takes away a star is the AC in my room.  No matter what I set it to it never got cooler than 74.  We had two other guests that were with us and their rooms would cool down into the 60's.  It may have been that having large windows on 3 sides of our room and that they faced towards the west caused the room not to cool properly.  Might be something they should look at.  Also a fan in the bedroom would have been nice to.  Overall I would definitely return to this hotel.