I wouldn't mind a trek down there again.... I have many fond memories of my weekends there, sleeping over and having a great BBQ. My friends (I think) were renting it from the Cement Factory and bought their water supply from them.
There (used to be) a very tiny well hidden path that took you down the hill to the back of the white building. I'm sure it's overgrown now. Or generally we would just get in the boat and go across from the pier. One night I actually climbed across the rocks around the coast in a little black dress and heels when the boat failed to start LOL. Now 'that' was an experience
I'm up for a hike over to that area if anyone else is interested. After seeing the satellite photo's I'm intrigued to just how much the trees have taken over.
There is also a creepy cave IMHO on that plot of land that apparently had hidden relics from the Japanese era. I was too scared to go in though.