When I first read the article about the story I went away the idea that the hiding place was called 'the 4,9,5'. Of course, right next to that it says that it used to be called the actual name in the grid but, needless to say, I completely overlooked that.
Thankfully I noticed in the grid what looked like a much more likely name and that prompted me to revisit the source materal.
What a plalava, completely of my own making.
Thanks to Shark for a lovely puzzle and the way the result of the instruction all comes together is quite amazing:-)