It was really easy to find it because it is on the main thoroughfare and the main road leading to Senado Square. It is along the same side and road as the Grand Lisboa and the Lisboa hotels.
The milk pudding was absolutely the best I've ever had. Try the ones with red bean paste on top and it will absolutely blow your mind away. It is a tad expensive but well worth it. It is very smooth and not too sweet. The pork buns were okay.
The staff speak enough English for tourists, so it is absolutely tourist-friendly.