This apartment is in a fantastic location overlooking Nyhavn harbour and even has a balcony so you watch all the goings on below you! It's in easy walking distance of all the tourist sights and really close to a metro stop (5-10 min walk). The apartment is huge and was really clean. It can be a little noisy of a morning but that's what you get with such a central location.
The only thing that would make the apartment better is to add a few extra amenities - e.g. there's no kettle, iron/ironing board or hairdryer. It may not seem a lot but these little things that help the stay would take this from a good apartment to a great apartment.
I'd have no hesitation in staying here again.