I almost ALWAYS stay at TI when I'm there... best value for your money, and the Mirage, which has the biggest room in Vegas, is literally next door... There's even a little people mover that'll take you there... Also, the Bellagio is across the street...
The 1/2NL at the Mirage is a great game, but if you're lookin to travel a little, Paris (or Bally's, they're connected and I dont remember which has the PR) has the most godawful mizorly players on the earth... Its not much of a pokerroom, but MAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAN are they bad...