Close to 72hrs. I work in the entertainment industry and we had a project that was poorly lead. Overpromises were made, not enough time and people. It was two of us working from Friday into Sunday. The issue with the place with worked at (besides the company itself) was that the heat would shut off at night and the weekends. We both worked in a little small office, that used to be a closet. An electric space heater kept us warm while we worked, but once you opened the door into the main office space it was freezing, because it was the dead of winter. I tried to catch a nap a few times, but it was way too cold to actually sleep on the couch. The other issue was the noise being created by the city that was building a park across the street and breaking through the foundation. We eventually finished the project, and when they were thanking the people involved for all the great work, the two of us were not mentioned. Lovely place.