The apartment is quite nice and has enough space and the location is good for public transport.
Communication with Dennis was sometimes an issue as he was not available and we waited for responses. He was not at the apartment on our arrival and so we had to call his friend who unfortunately didn't answer at first. After waiting for half an hour we finally got the keys. The apartment is fully equipped, including food in the fridge - which was not always good...
Regardless, we had a good time in Copenhagen and in the apartment, but do not expect high standard.