Yes, free refills at Market House. Just save your receipt. Only regular and vanilla flavor are free refills, though. Also, I have not gone back the last few times because for me the coffee changed and it was awful the last couple of times I got it. Don't know what they did but I sure didn't like it. If it is back to being a good cup of coffee, let me know.
We like Blue Ribbon Bakery, and the coffee cart in DCA. I don't think I know the name of it, but it's a cart in the middle of the park. When they are open at least, every other time I go they are cleaning the machine. They clean that machine a lot, lol.