6:30 am near the GDR. If you want machine espresso - they are located in Horizons and in the Terrace. These are not the greatest (I am a coffee snob 🙂 ) but is OK in a pinch.
Stuff from machine is acceptable. Terrace used to have a barista setup -- ask for a latte or cappuccino from there. Their standard coffee is just plain horrible and is likely from syrup, because brewed coffee cannot be that bad.