Gourmet Burger Kitchen are currently doing all burgers for €5 until 5pm. It’s a pretty sweet offer, as the burgers usually cost around the €10-€12 mark. I went for lunch there yesterday with some of my colleagues, and it only cost us €41 for a big feed up for six people. The chips are chunky and filling, and three portions between six of us was more than enough. They also have a decent selection of veggie burgers. Recommended for a cheap lunch.
One tip though: the service is slow so allow plenty of time. It’s not the waitstaff’s fault, they’re all really good – there’s just not enough of them.