We very much enjoyed our stay in Copenhagen and found that the appartment was easy to find and well located in the city.
It should be noted that the apartment is on the top floor of a house with no lift, so I suggest to travel light. Our host was very friendly and gave us some great tips for places to visit. While it is possible to walk to the city center, I do suggest to use public transport as it is a bit of a long walk, luckily the busses stop just a few minutes away.
The appartment itself is very nice and the room was plenty big enough. The bed was comfortable, just a little small for two people, for a few nights it is fine though.
Happy to recommend this to anyone planning to visit wonderfull Copenhagen.