Beware!!! I know there are some good reviews on here, but I think when you book with the Las Vegas Hilton you take a gamble. We booked the Hilton for a convention with a group of 12 or so. We were spread out all over the hotel so many of us had good experiences, however, I did not.
The first room I was put in did not have hot water and it looked as if it had not been remodeled since 1970. After a cold shower I went downstairs and asked what the problem was. I was told that it was the entire hotel and it would only be for about and hour. I then met my coworkers for dinner and asked if they had hot water. They all had hot water! Hmm somthing didn't add up.
So the next morning I was still in bed and my roomate comes out of the shower furious because the water was still cold. I went downstairs to complain so they switched us to another room that looked like it was from 1970 only this time there were pubic-looking hairs all over the floor and the bathtub faucet wouldn't shut off. We were already late to work so we had no time to switch again.
When we returned from work the elevators opened and the entire floor was under constuction except our room which we were locked out of. I called the front desk and the came and gave us a key. We then asked about the running water and they said there was nothing they could do.
So after all this I went to the front desk and put my foot down, so I got a apology and was put in an "upgraded" room (meaning that it had been updated in the past 20 years) .
The hotel offered to do nothing for us except give us a dinner for 2 at their crappy Mexican restaurant that I had eaten at the night before. Horrible!