The Completely Unofficial 08-09 Chicago Dorm Guide
That's the most comprehensive thread on dorms that we have running.
Hitchcock is co-ed by "floor." As any Hitchcockian can explain, H is organized in vertical columns (sections) and in order to get from the third floor of section 2 to the third floor of section 3, you have to go alll the way downstairs and then all the way upstairs again. Each floor in each section has a hall bathroom, and that bathroom is de facto single-sex, because everybody on the section-floor is of the same sex.