I have stayed many times in Copenhagen but this was my first time at Rosenborg
The apartment and the location is perfect and I would probably choose Rosenborg again especially when travelling with kids or in a group.
The only thing that I can complain about is that there is a lot of noice that starts very early in the morning almost every day. First of all you are woken up at 7.00 am because all the trash companies start working then and start emptying the trash in the area (very noisy) . The location of Rosenborg is right next to the Trinitatis church and at 8.00 am the church rings their rower bells for almost 15 minutes or about 200 times... all good but there is no sleeping in ... so bring earplugs
We were a large group in 4 different apartments and we were all complaining about how this, but as said before this place is in the best location and is very nice