Before my last trip to Vegas I was cruising Fat Wallet for hotel deals and came across rooms at Caesars for $160 a night. It turns out that our room was actually a deluxe suite in the Augustus Tower. The room was beautiful with a huge bathroom, dreamy beds, and nice amenities.
In general, I highly recommend Caesars as a place to stay. It has a great location on the strip, the casino is nice, the pool is beautiful, PURE is right downstairs (though it's not my favorite club), and the mall attached is convenient for picking up forgotten items.
Also, if you check in at the airport there is no line at all.