I stayed at the Hilton Frontenac in St. Louis for a business trip, the hotel is very charming and incredibly spacious. The room I stayed in was enormous, the bed was also huge and I felt the room was very comfortable and spacious. The bathroom was lovely as was the huge walk in shower.
We had access to the executive room upstairs on the third floor, and although breakfast was part of the package, I am not sure the deal for the executive room was worth it. You have to pay for your own alcohol, and breakfast was just toast or cereal. But this was a nice area to escape and unwind after a long business day.
Opposite the hotel is a small supermarket, to the side of the hotel is large shopping mall and there are many restaurants to choose from around the Hotel depending on your taste. The Hilton Frontenac is lovely hotel, situated in a clean and safe area of St. Louis but I would be skeptical to stay here if you are not driving. There is NO public transport near by so you must either drive everywhere or get a taxi.More