Chennai Express is located in a mini-food court that is not the cleanest. The seating is awkward and cramped, its location attracts some riffraff, and there's a considerable wait time to be served. Butttt the food is authentic and delicious, and the staff is nice and helpful. I ate the paneer masala dosa there, and took a veggie biryani and fish curry to go. Everything was seasoned well, but not quite spicy enough even though I asked for it to be spicy. So make sure to ask for everything extra extra spicy if you really want to feel the fire.