I went here for lunch with a group around 12:30. We beat the crowd by about 15 minutes. By 1:00, the place was full with a line out of the door.
The menu was made up of five main dishes which could be ordered in a "normal" plate with sides or in a combo-plate with two main dishes and sides. The normal plate was plenty of food for lunch.
The food was ultimately good, but not great. Some of the side dishes were very tasty, but the general conclusion was that the food wasn't anything special. It tended to be one-note without a lot of complexity. Of course, finding vegetarian food in Lisbon isn't a simple matter, so it was very welcome in that respect.
The waiter was a big smug, and tried to talk us into ordering more wine and food than we needed. Otherwise the service was good.Pros: Good food, Reasonably priced
Cons: Pushed us to buy more