The best place to stay in Vegas is anyplace that is clean, and not expensive, near all the attractions. I go to Vegas to see the attractions. A Motel/Hotel rooms is just a place to sleep in. If you want to stay in a nice place, stay one or two nights in a theme hotel just for the novelty. A friend of mine told me that the company he works for has a deal with some hotels and he can get a discount. The secret is that everyone gets a discount if there are availabilities. They will upgrade you if you just ask. Better that the room is rented out than it stays empty.
BTW- Do not gamble in Vegas, the place is built by 500,000,000 fools that came before you with money and left with none.