If I could give it less than one star I would.  My wife and I recently stayed in the Riviera and I don't think we'll ever be staying there again because of our interactions with the front desk staff.  When I made the reservations for our room online they give you a choice for a double or king.  We selected a King in their premier room but found they had assigned us a double bed smoking room in their cheapest tower.  When I asked the lady at the desk about this with my wife by my side she snapped at me saying that king/double rooms aren't assigned until check in.  It makes no sense to me why they would even give you the option on their website to select the class of room/number of beds if it doesn't matter to them.  The rude, abrupt, and confrontational tone that we were treated with was keeping with the premier customer service of a vegas hotel that we have experienced in the past.  As it turned out she ended up taking our keys and changing the room without telling us what was going on.  We were surprised and confused when we entered our non smoking king room that we originally had reserved.  Why did there have to be an incident in the first place?  I'm still confused.