This place is a testament to the power of word-of-mouth. So much so that by writing this review I feel like just one more voice added to a cacophony of praise for this place. I've been familiar with Taipei South for about 8 years now and I've never once seen or heard any advertisement for the place anywhere. It's just not needed. Even with the terrible location the place thrives.
And for good reason. The food is always good and plentiful (best eggrolls in town). The service is always quick. The staff is back to fill your drink while it's still half full. And all this for the price of a fast food meal.
I left that part of town about 3 years ago but still go back probably once a month. I just haven't been able to find a Chinese restaurant in center city that lives up to it. They're all either not as good, more expensive or both.
The only conceivable complaint I can see being made of this place is that the wait staff can be a bit terse and may make some feel rushed. I choose to interpret this as fast service as they do everything quickly but never make me feel pressed to leave if I linger in conversation after the bill has been paid. I think they just know that nearly all their customers are regulars and figure they know what they want almost as soon as they sit down.