Shinjuku Asia Yokocho
Time Out says
This cuisine at this Kabukicho spot draws fans of street food from the Asian backpacker circuit. While it only just qualifies as a beer garden by virtue of a few sections that are exposed to the elements, its lofty vantage point is perfect for enjoying the cool rooftop breeze. It's a culinary free-for-all (you can order from any of the assembled restaurants, regardless of where you sit), and the beers are affordably priced, starting at around ¥550, with a vast selection sourced from more than 35 countries.