Vị Nguyên Vietnamese Restaurant & Vegetarian Food Hanoi Old Quarter serves Vietnamese dishes and vegetarian options in Hanoi Old Quarter. Its stir-fried noodles use a distinct noodle type and are plated neatly, and it also offers a brothless noodle dish and bun cha. Staff explain the menu and help with ordering, and the restaurant is kept clean and tidy. The indoor space tends to be hot.