This place was perfect! It is right on the lake so it has a great view. It's a short walk to the market, restaurants, bars, the Nørreport train station, and the Strøget shopping street. Inside it's very spacious (especially compared to the hotel rooms in the area) and furnished simply and comfortably.
Johan was excellent as well. He was always very responsive when I contacted him and was there to meet me when I arrived, give me the keys, and walk me around the flat.
I highly recommend staying here while you're in Copenhagen.