The container only has room for the log file,so no swag stashing. Keep looking around GZ and use some geosense. Hopefully things will become more obvious then.
No bushwacking required, although unfortunately there is a scattering of weeds, broken glass, and trash. The area is relatively quiet, other than occasional pedestrians. So use good muggle sense depending.
The container isn't on the wrong side of the No Trespassing fence, so no need to do anything foolish. Should come to being pretty much a park and grab, while admiring a historical site that's over 200 years old :)