The entire staff is friendly and I tend to stop in regularly when the Cardinals win for a complimentary medium sized coffee. I very much enjoy the speciality Double D's coffees including the vanilla swirl with cream (hold the sugar) since it's already sweet and it's wonderful either hot or iced. Service is quick and with a smile. If you aren't happy with your drink, they will always make it right. Luckily, my coffee is always perfect.
The only thing I would request is cleanliness of the glass windows, especially the front door. It's minor and I am not removing a star because of it. Otherwise, this place is kept clean with each visit I have had. Thank you DD and your staff. :)