I did go into that other room as well and there's just nothing in there. I very well could be blind and I tend to miss subtle things, but I didn't see anything in there. I can provide screenshots if that would help?
the statue is behinds hidden wall on the left side of that empty room. check the wall, its the top part that's lighter in color, over by the pile of boxes. you have to double jump to get to it.
