Hi there,
While in
Copenhagen, you might want to visit the Christiansborg Castle, the Charlottenborg castle and the Rosenborg Castle.
Another place you would want to check out is the is the Viking harbor and the famed Little Mermaid statue, placed in honor of Denmark’s most famous author, Hans Christian Anderson.
Regarding accommodation, I would recommend the Sleep-in-Heaven as it is the cheapest
hostel in Copenhagen, and features continental breakfast, bar, free internet, etc.
Hope this helps
VacationBuddy