it might sounds weird but we stayed at the Bellagio in 2005 for around US$120 a night. My mouth dropped to the floor when we saw our room - AMAZING. Further down the strip is where you might find cheaper hotels. Check out this site you might find a good deal http://www.lasvegas.com/resorts/ about 10 years ago
In this economic environment you should be able to stay at any hotel in Vegas for that price and less.
http://travel.nytimes.com/2009/01/11/travel/11frugal.html about 10 years ago
Agreed. You can easily find super great deals on the strip right now. I would suggest you try visiting the hotel websites directly, as well as outside services (kayak, priceline, etc). In the past I have received much better deals from the hotels directly in Vegas. about 10 years ago