The only room visible in the KELLER house is ANNIE’S, where by lamplight ANNIE in a shawl is at a desk writing a letter; at her bureau HELEN in her customary unkempt state is tucking her doll in the bottom drawer as a cradle, the contents of which she has dumped out, creating as usual a fine disorder. —The Miracle Worker,
William Gibson

Based on the stage directions, where does this scene in the play take place?

in Annie’s room at the Perkins Institute for the Blind
in Annie’s room in the Keller residence
in a classroom at the Perkins School for the Blind
in Annie’s room at a hotel near the Keller home