Not a location suggestion, but if you find a solid spot, but their coffee is weak/thin and lacking flavor. Pack some quality instant coffee powder (One of the Perks from Kroger is good enough for me), and stir a ~teaspoon of it into the coffee. It makes a robust coffee.

If you want to avoid getting too wired, use decaf instant coffee.

I always do this on airplanes, or at home when I’m tired but don’t want to drink more than a cup.