Found this old building that is still accessible. Most old buildings are fenced or sealed off, or charge really expensive for the exotic value.
According to the person keeping watch on the place, it's owned by a rich guy who has many buildings and factories. He's dead and his family doesn't renovate the buildings that fell out of use.
The watchman himself said he's been underpaid for years, and taking donation from giving entry to people who came to do photo shoot here has been one of his way to earn extra in the side.
On December he said an Australian artist will draw graffiti on the exterior of the building. Have to visit before that.
I personally want to keep the place as secret. Don't want photographers to start infesting the place like plague.