We stayed in Sisse's apartment for five days during our vacation and enjoyed it very much. The apartment was ideal for getting around with the public transport as it is very close to the metro station of Christianshavn. Everything you need is very close as well: a supermarket at the next corner, several bakeries, ATM's etc.
The apartment is nicely decorated and due to large windows at the living room it is very light. The house is located in a small street with almost no car traffic, as it ends in a pedestrian area. The sleeping room is at the rear side of the house, so it is quiet there. In the living room you can hear some noise from the near main road, but that is quite normal for such a location, and it was not a problem at all for us.
We did not meet Sisse in person, but communication was very good and easy all the time. Check-in also was very easy: upon our arrival at the front door we gave Sisse's friend Line a call, and within maximum 3 minutes she was there, let us in and explained everything very friendly in detail.
We very much recommend the apartment as a perfect base for exploring Copenhagen!