Who would have thought that in STC (Senayan Trade Center) there is an actual Japanese restaurant worth eating? Hidden among the bustle of electronics & air soft-gun shops at the Ground Floor, this is exactly where Sumiya is located. Sumiya is said to be an authentic Japanese restaurant and I’ve heard some really good praises on it in social media. But just how ‘authentic’ is authentic? I went there on some dinner time to find out.