There are some nice coffee spots in Georgetown on Wisconsin Ave. Cafe Georgetown is a kooky little place with interesting coffee options, though it's pricey. There's a Turkish cafe next to the starbucks too.

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Making friends... I'd say that's a bit tough. I was blessed with a network from grad school but in my experience it's been difficult to break out and make new friends here. I've heard it said that in DC a common phrase is "you want a friend, get a dog." I really hope next year proves that wrong.

For French and German, I know the German Embassy hosts events for German speakers. For French, try Meetup, they have plenty of language groups.

Hope this helps.