The special quality of this restaurant is its typical chinese flair. I mean it's neither upmarked or classy nor western style like.
So to me it felt typical chinese and 'nothing special'. I think this is also how the food tasted like. Compared to "Suhu", "Gingko Tree" or other restaurants the dumplings e.g. don't taste like special treatment, but original (though I really like the Suhu-dumplings).
I cannot recommend the desert. It doesn't seem to be popuar anyway, but my papaya was addled - so rather stick to the common dishes ;-)
A little confusing is its name on the outside (it says 'vegetarian coffee' or something similar to that. 'Fairy Su' is only to find on the menu). But it's quite colourful - easy to find.
This place is perfect for an informal chinese nothing-special meal.
It's good to have a vegegatiran equivalent!
Cons: Papaya was addled, English name only on the menu