Katie and Amir's place was great. It's very conveniently located, especially once you find out about the (free) H Street streetcar that takes you all the way to Union Station. H Street is chock-full of nice cafes and restaurants, a Whole Foods, and an awesome bookstore -- it was the perfect neighborhood to come back to after a day of sightseeing. The apartment was very clean and well-maintained, and stays cool in the muggy Washington weather due to being slightly below street level. Katie and Amir were very helpful and responded promptly to messages. I'd recommend their place to anyone.