The Men's room. We had a lab that required men's and women's dressing rooms. The lab had been abandoned so they put my office/lab area in the dressing area of the Men's room. There was a bathroom located inside this dressing area. It was the most remote bathroom in the building so a lot of guys would go there to take care of "serious" business. All-in-all, since it was so isolated, I got A LOT of work done.