I really liked this place. It's near the Lama Temple and Confucius Temple (on the other side of the road). Lots of locals. Wide menu options. I didn't got how it works after 5 p.m. because when I came there the waiter said they have only buffet, but there were some guests which were sitting with menu and they didn't use buffet, so I guess it was an option to choose, but not for lonely traveller like me.
Anyway I liked everything - the food was quite good, various, tasty. I was surprised with tea they serve - pu'er. The buffet costed me 68 RMB. I didn't got if they ask this price for the one person or for the table. I think it's a good place to eat (but a little bit pricey).
Cons: Food quite oily.