Kristian replies very soon and in the manuel there are a lot of nice tips! We got the key from Samuel, a friend of Kristian. He replied also very soon and welcomed us warmely. The location of the appartment was very good so that we could reach almost everywhere we wanted to go by walking. It is also near Nørreport station where it is also very convenient to go to some other places by Metro or bus. In the appartment there was also everything we need and we had a nice time in Copenhagen although the weather was not the best;) Thanks Kristian!