I lived very near from this restaurant for 5 months and I used to go there for lunch almost every day! They mainly serve Czech dishes and they all taste good. If you are looking for something really local and cheap, this is the best choice! However, be prepared because they only speak Czech and they do not have English menus. I advise you to check the menu in advance and translate it online!
For sure one of the best places for lunch in Prague! I came here for the second time and there were a long queue waiting outside, at 1:30 PM! There are a lot of food selections and they all look/taste really tasty.The price is super low, two people with soup, main dishes and salad spent less than 10 dollars (!) in total. I can say it is not common in Prague. And the place is clean and neat, not like a cheap restaurant at all. Highly recommended.