1.
cafeteria, dining hall, canteen
A place serving simple, affordable meals, often found in schools, offices, or as small eateries.
2.
dining room
A room in a house or building used for eating meals.
食堂 can mean a cafeteria (学生食堂 student cafeteria, 社員食堂 company cafeteria) or a small, casual restaurant serving home-style food. 大衆食堂 are traditional working-class eateries. The word combines 食 (eat) and 堂 (hall).