La loge de la concierge sera fermée
Janitor (cleaning) Concierge (Hotel)
A desk is "un bureau" (masc.)
un bureau
"nettoie ton bureau"
ils ont / elles ont un bureau
Teacher's Desk - el escritorio Student's Desk - el pupitre :D
"fermé"
La cuisine est fermée.
"Le bureau" is commonly used. If you want to be really specific, you can say, "le bureau du prof (the desk of the teacher)," but that's probably overkill.
notre bureau est fermé.
"le jouet du chat est dans le bureau" (bureau means either 'desk' or 'office')
sous Such as if you wanted to say the pencil is under the desk it would be Le crayon est sous le bureau