Visited twice during our trip to Copenhagen. As a foodie, you will not want to miss this place, it's a great mixture between a market and food stalls, all offering great quality and a broad palette of foods and cuisines to choose from. There's the traditional variety of smorrebrods at Hallernes Smorrebrod (tried and tested twice), there's tapas at Tapa del Toro (also tried and liked), chocolate pralines at Xocolatl (also excellent), bread and patisserie, fish, cheese, pasta, tacos, wine, craft beer. In short, everything you would need to leave the place happy and with a satisfied belly. Note that the tables in front of the stalls are reserved for the stall customers, but the tables from the outer ring, near the windows, and the outdoor seating area are for everyone. Very crowded at meal times and really tough to get a table, make sure you get one before getting in line for the food, otherwise you might eat standing.
Wouldn't miss it if we're ever again in Copenhagen.