I explicitly timed my trip to the tower to be in the late evening, where I could secure for myself a comfortable table next to the window for a couple hours without upsetting the staff (if I were to try that when busy, I'm not sure it'd go over well). Thus, between the tea, the view, a comfortable chair, and a nearby electrical outlet, I was set up with a wonderful office in which to work. It's places like that that convince me that telecommuting has a real future.