You should be refunded plus the additional 35k points for your trouble.
This is not an insignificant thing. This is a major safety issue. I agree with the poster that you should include the picture in your email. If the general manager refuses, reply again but copy hilton corporate with the picture. If the general manager still refuses, put it on Tripadvisor. Be polite, be factual, but do not accept anything less than a refund plus something in addition.
They are amazingly lucky that you were not injured. The liability alone for this type of thing would be tremendously expensive. I wonder what their insurance company would think...