Lets get the difficult things about Shree Thaker Bhojanalay out of the way first.
I visited it only twice in my life, and will admit that its difficult to find even the second time. In Old Mumbai in an area near Bhuleshwar (called because you’ll forget where you are - its a maze of confusing criss-crossing, non-linear lanes). So, I will explain how I go about locating it shortly.