I work on the third floor. The third floor is where engineering lives, which includes people like developers and QA and such. Each floor has four washrooms, two in the middle and two somewhere else. Presumably, two are for men and two are for women. This is mostly true.
On the third floor, however, there are three guys’ washrooms. Apparently, it’s because of the gender ratios up here or something. Unfortunately, unlike what we thought during the tour, this was not considered during construction, so the third guys’ washroom is actually one that used to be for women.