Have been to this location numerous times, I can say that it's good for what it's good for - a great place to grab a drink and hang out with friends.
FOOD: The dishes I've tried here (e.g. the Merchant Burger, Veal Schnitzel, Markt Wings) don't warrant a visit in itself, and are actually a bit on the pricey side ($25 for each of the burger/veal). I do recommend the flight of poutines however. This "Trio" allows you to try all 3 of the pastrami, porter bacon, and short-rib poutines for $20.
BEER: As per its namesake, this is a great place to try custom-brewed beers that you may not be able to find elsewhere. The beer menu is quite extensive (complete with country of origin and descriptions), so there's always something new to try from upon repeated visits. The flight of samplers is a good way to go if you're looking for variety, or to share with friends.
SUMMARY: Eat if you're hungry, but stay for the drinks and the atmosphere.