So if the foot end is furthest away from us, the viewer, what is that iron thing growing up out of the foot end of the bed ? Its not behind the bed, but appears to be standing on it ?
I think what you are reffering to is what I took to be the corner of the head-board so is
in front of the foot board rather than growing out of it.
I don't think that this could be a servant's room either, too much furniture and the quality of the furnishings (matching set of light coloured fabric padded chairs, for example). I think it's a room being used to make some (people) as comfortable as possible in an emergency maybe.
The spooky thing is that it seems eerily familiar. Not that I have seen it before but that the doors etc. seem of a very familiar style. A long time ago I was at a convent school, built as a Victorian orphanage, I believe, but there were cloisters and attics that come to mind whenever I look at this picture.