There may be a lot behind the billowing curtain (scroll down):
http://www.businessinsider.com/mandalay-bay-hotel-room-las-vegas-shooter-suite-2017-10/#few-photos-from-inside-the-shooters-hotel-room-have-been-released-4
Would there be a reason the window broken in 32-135 is behind the most cumbersome part of the drapery?