Great location - 4 min to the bus stop or 8 to the metro. Close to Nyhavn, lots of places to eat and drink nearby, easy to get all over Copehagen. Mathias was easy to communicate with.
There is a lot of construction on the street out front as another reviewer mentioned, but I was usually up before it started (and it usually started pretty slow/ quiet) and out of the apartment before it got loud. Other than the few times I was there for short periods in the afternoon it was pretty quiet, and even then it wasn't bad.