I ate here a couple of times in December 2014 and found the food to be good. The meal of the day is currently only 7 soles and comes with the typical lineup: soup, salad, main plate, juice and dessert.
The location is over in the Cayma neighborhood, about a 15-20 minute walk from the historic center. If you are going to the Yanahuara neighborhood to the scenic plaza, this place isn't all that far away.
Cons: A bit of a walk from the historic center