25 year old grad student in New York City
Complete with a queen size bed, an (obligatory) Herman Miller desk chair, a couple of book shelves to store a complete set of the Encyclopedia Britannica I stole from my grandparents, all while still leaving plenty room for bicycle storage.
This entire 13'x7' space is mine for only $1700 / month, all without having to be burdened by trivialities like sunlight or fresh air from a window.