It's a corner lot shop behind the Old Town White Coffee restaurant at the Platinum Walk, Danau Kota. This restaurant opens 24 hours and you may come whenever you like.
I had nasi lemak. Very fulfilling and the sambal was quite spicy.
Mak Iti had Nasi Dagang.
I recommed this set. Nasi Berlauk with free iced Teh O. It'll just cost you RM5.90, if I'm not mistaken.