Book this appartment!!! I'd do it again next time I'm in Copenhagen. It's lovely, it's a home far away from home. The location is superb, in a very trendy area. Marlene can give you heaps of recommendations. I was there as a solo traveller and could rent Marlene's bike, which brought me literally in no time everywhere in Copenhagen. Only a few blocks away, you can go for a run next to the water or do some yoga in the park. Be aware, it's on the 4th or 5th floor (so quite some stairs, which you get used to after the second entry ;-)) and you sleep on the street side, which can be a bit noisy if you're a light sleeper, but nothing some ear plugs can't fix. :-)