This is the 3642nd most frequent Russian word.
столовую
The Russian word "столовую" means "dining room" or "canteen" in English.
Here, 'столовую' is used in the accusative case, typical for denoting movement towards a location.
Я иду в столовую.
I am going to the cafeteria.
In this context, 'столовую' (changed here to 'столовой') indicates the location where the action took place, using the prepositional case.
В столовой было очень вкусно.
The food in the cafeteria was very delicious.
Here, 'столовую' refers to a specific type of room and is in the accusative case due to the preposition 'для' signifying purpose or recipient.