What conclusion can you draw about the narrator's bedroom? How do you know?

From the text, we learn that the narrator's bedroom was formerly a nursery or playroom. It has bars on the windows, and it is meant to be confining.... safe. We can infer that the narrator is being confined.... like a child.

It is a big, airy room, the whole floor nearly, with windows that look all ways, and air and sunshine galore. It was nursery first and then playroom and gymnasium, I should judge; for the windows are barred for little children, and there are rings and things in the walls. The paint and paper look as if a boys' school had used it. It is stripped offthe paper - in great patches all around the head of my bed, about as far as I can reach, and in a great place on the other side of the room low down. I never saw a worse paper in my life.