An area on the north part of Refshaleoen, which is an island right outside Copenhagen to the east, easily accessible by car or bike. You can fish all along Refshalevej where you can access the water. Good in light winds from all directions but northern ones.
It's not a beautiful place, essentially located in the middle of an old industrial area, but can still be quite interesting to visit, and is certainly off beat compared to where tourists usually go.
There's a small harbor to the west at the end of the road Refshalevej, and on the way out you actually pass very close by the Copenhagen Opera House and the area Holmen, which is well worth a visit.
Easily accessible by car or bike via the road Refshalevej