Katja Maria is just a superb host :D. Very helpful and open. From the very start, she was patiently answering all of our questions and was even willing to wait a couple of days so we could sort out some small difficulties concerning the booking. As for her apartment, it's equally sweet :). Even though it's small, it has everything you need (you're gonna love the balcony) and it's basically a place you don't want to leave. You might have a slight problem with the internet connection there though, but I reckon that's not what you're coming for to Copenhagen ;). So definitely highly recommend Katja's place to anyone!