A friend who lives in the D.C. area recommended this coffeehouse to me. And considering how we used to frolic through London’s food scene together, I already knew that she’s just as picky as I am when it comes to coffee. Tucked away on 20th Street in the DuPont Circle area, Filter Coffeehouse is a gem that’s become a clear favorite of locals. The coffee is some of the best I’ve tried, ever. That’s no joke. The place was extremely crowded both times that I went, which is always a great sign. The service is friendly and fantastic.