Fabulous Las Vegas has the best strip poker anywhere with plenty of games available all over the place.
Honorable Mention: MGM Grand with plenty of space, many tables and small cash games including the super popular $1-$2 no-limit Texas Holdem..
With the explosion of poker after the millennium poker rooms shot up all over Vegas. A few casinos set up huge poker facilities to host large scale tournaments and around the clock cash games. Likewise, almost every other Vegas Strip casino set up smaller poker rooms with between 4 - 12 tables and daily small buy-in tournaments.