We stayed at Vdara for 2 nights this weekend and really liked it, one room on the 41st floor and one room on the 34th floor. Better views if you get a room that ends in an even number.
Gym is smaller in size, located on 2nd floor in the spa area, open 6am-8pm.
Pool is open from 9am-5pm! It's heated and can get busy even in the early morning. Plenty of towels available at the pool (you can even bring them back to your hotel room).
Love that it's non-smoking hotel and you can easily walk over to Aria, Bellagio or Cosmo to gamble. :)
The parking is complimentary valet -- driving in the roundabout is quite dangerous with so many cars & taxis in the area. The on & off ramp from the street to the hotel is difficult to find & navigate!
Rooms are nice & modern, the parlor area has its own tv. Kitchen & dining area is smaller than The Signature Hotel (mgm).
I'm not sure whether this hotel would be considered a 5-star place but more like a 4-star! Starbucks is avail downstairs.