Have been there for two or three times. As I remember the service was slow. The waiter was focused on his cell phone instead of his job.
According to my husband, if a restaurant is on a second floor with this many stairs, it has to be great to attract customers otherwise people won't come. This place failed for that.
The taste and quality of food were not stable. The lamb soup with bread soaked is a must try but it really depends on the mood of the chef. It's not just me, but my other two friends visited there separately also feel the same. I also had steamed lamb shank slice dipped in garlic sauce. The portion Was tiny, not worth the money. Hope they can improve. I'd say the liang Pi and bun stuffed pork was OK, worthy a try. My friend who visited there recently thinks opposite.
If you by any chance want to try a genuine Xi'an food, pray that the chef are doing his job right that day.