거실에

In a sentence

• 거실에는 소파가 있어요.

  There is a sofa in the living room.

  거실에 is used as a locational marker indicating 'in the living room.'

• 아이들은 거실에서 놀고 있어요.

  The children are playing in the living room.

  거실에 is part of a larger locative concept used to specify an action occurring in the living room, using instrumental particle context.

• 저는 매일 아침 거실에서 커피를 마셔요.

  I drink coffee in the living room every morning.

  거실에 indicates the location where the activity (drinking coffee) regularly happens, emphasizing routine and habitual activity.