We had a lovely stay at Claus´appartment in Copenhagen. It is very clean and equipped with everything you need, there is even a communal rooftop that you can use.
The only thing we weren´t aware of is that there is no real bathroom, it´s more of a tiny toilette with a build-in shower. It serves the purpose but it could have been made more transparent in the announcement. Besides that, Claus was very friendly and helpful andwe can definitely recommend staying in his appartment.