Great Find
By lights onThe Hilton Frontenac is a great hotel in the middle of St. Louis.When we first arrived we were a little apprehensive as it looked like the hotel was fairly old but it did have a very classy old-world feel to it.We were impressed once inside as the hotel has been well kept and updated throughout the years.
Due to a conference being held there, the only rooms available were in the executive suites.This turned out to be a great find.The room was very spacious and we had access to the executive lounge.In the lounge, they had free wi-fi (there is a charge for wi-fi in the rooms), breakfast, appetizers in the early evening, dessert at night, and soda and water available all day long.We had a toddler with us and the lounge was wonderful to grab him some quick food or drink without costing us anything extra.
There was a restaurant on site and room service was also available, but we did not try out either due to having access to the lounge.

Sounds like that did work to your benefit and saved you some money too.
This is a very nice hotel in a nice part of town. Glad you enjoyed your stay.