I've just been looking at the Accommodation page on the Wikimania 2012 wiki and apparently the Dupont Circle Hotel is located 15 minutes walk from the venue, while the Kimptom hotels are located 45 minutes walk from the venue and 10 minutes walk from the Dupont Circle Hotel. You have very strange geometry in Washington DC... apparently the triangle inequality [1] doesn't hold!
Can someone correct whichever of those numbers is wrong?
Thanks!
Tom