Depending on your budget I would stay at the Venetian, Palazzo, Wynn, Encore or Bellagio if you want a really nice resort but they are on the expensive side.

A little less expensive but still very nice are Treasure Island and the Mirage.

The pools at all those hotels are very nice.

A nice, Vegas-style magic show that's pretty cheap is Lance Burton at the Monte Carlo.

Any Cirque show will be good. Also Penn and Teller at the Rio and Blue Man Group at the Venetian are good.