My experiences with Downtown Cleaners has been exceptionally positive. I went there a couple times as they were right across the street from Union Station and I would drop some shirts off in the morning and they would have them ready by the time I got off work. the next day. They even have an express service for a little bit extra, They offer alterations and other services that are very useful for those who work downtown and need help in a flash, such as a new button sewed on or some quick stain removal. Very handy when you have a meeting coming up and need to look your best.
Most people have a dry cleaner service near where they live, but having a dry cleaner that is reliable when you are in the area can be very useful.