I was attending a conference at the DC convention center, and the space was perfect for resting at the end of the day. As described, the space was small, but the accommodations were great (i.e. water pressure, kitchen facilities, WiFi etc.). As an added bonus there were many international tenants, interns from Columbia and Mexico as well as a PhD student from Germany. The best part about the room was the location, right across the street from the Metro, and four stops up from the convention center thus saving on transportation and not having to spend on Uber/Taxi/car rental