We usually stay at Harrah's when gaming in St. Louis, but we took advantage of a free night offer from Ameristar in St. Charles. The hotel was beautiful. It is all suites, which means a full bathtub and a shower, double sink and the toilet in its own space with a second door.
The bedroom was next, with its own flat screen. then down two steps to the sitting area with fridge and another flat screen. (By the way, the bathroom also has a small flat screen.)
Free wifi, unusual for a casino hotel, and the TVs had true HD channels with HBO and HDNET free. Room was tastefully decorated. If you have ever stayed at the Venetian, this room was at that level.