"There are two large sofas in the living room."
Translation:En la salono estas du grandaj sofoj.
No it is a matter of style and/or emphasis. Did your answer not get accepted?
My gosh, it didn't accept "kanapo".
Wait why doesn't "sofoj" take the accusative?
(Some nouns take the accusative while being added with a number. Why not here?)
Some verbs, like esti, don't take accusative. It is to indicate the direct object of the action, 'esti' (to be) does not get action it indicate a state of being.
I am not sure if 'esti' is the only verb that don't have accusative.