We really recommend living in Nørrebro while you visit Copenhagen, and Jespers flat is a great way to do so! Though it's a 25 minute walk to the heart of the city, it's really worth to take that walk at least once to see the beautiful streets and find interesting stores. There's buses that drop you off close to the apartment as well.
The flat is perfect for someone who just needs a place to sleep and spend the rest of the time exploring Copenhagen, if you're looking for more this might not be it. Jesper is a great and friendly host though, and didn't seem to mind that we accidentally arrived a bit late. Thanks for having us!