What kind of budget are you looking at? There's also the
Las Vegas Monorail. It runs by many hotels from
Sahara to the
MGM Grand. If you've got it in your budget then I say stay at the MGM Grand. If not there, then try,
Paris Las Vegas or
Harrahs Las Vegas. Those two have quite a few casinos within walking distance of each other. Check out the
map of the Las Vegas strip. It'll help you get a better sense of how far you're willing to walk and there's also a link to the various monorail/tram maps. Enjoy Vegas!