Personally I like to watch my anime alone and without distraction. So I tend to go lock myself up in my room, close the curtains and watch it on my laptop. Sometimes I will download MP4 files just to watch it on my TV. I don't have much of a desk, due to lack of room and storage. My desk is loaded with crap at the moment. So I tend to watch it while sitting in bed.
I personally find that Mi-Goreng noodles tends to be my food of choice I pick while watching anime. Iced coffee being the drink of preference.
I don't have a set time, I watch it from early in the morning till late at night and early into the next day.