The Rosenborg Hotel Apartments was a great place to stay for my family of five in Copenhagen! It was very central to everything. We were able to walk or take public transportation everywhere we had planned to go. We were also able to stumble upon hidden treasures when we went out and about from the space. Initially we were surprised by how loud it was outside - the garbage trucks, church bells, etc (we're not city people!), but got used to it within 24 hours.
Overall, we would highly recommend this place to everyone who wants to be central and have a great time in Copenhagen!