This small shop is selling traditional Indonesian snacks. It's located at the basement of Bugis Junction, next to Delifrance, below the escalator. The outlet also have some tables for dine-in guests. I remember they also have another outlet in Great World City, but I'm not too sure whether the outlet still there or not.
Some people said that the ketoprak is quite nice. I tried the ketroprak when I went there couple of weeks ago. It is nice, although you still can't compare with those which we usually buy from tukang ketoprak street vendors in Jakarta.
More pictures (not many) can be found here.