We were two couples staying at Morten's place in May, and we had a great time. Two of us slept in the main bedroom (one queen size bed) and the two other in the children's room (two separate bed).
The apartment is very nice looking in an old industrial building, with a huge open kitchen/living room. We had all the amenities we needed. The only small minus was that it was hot outside, it also got hot inside and we didn't really manage to get the aircon to cool sufficiently.
I have stayed in the Islands Brygge area before and it is super nice. It is slightly secluded from the downtown tourists, so a more chill experience, that said, the downtown metro station is just a few stops away, and getting to the Kodbyen area and Vesterbro is handily just across a pedestrian bridge not far away. Morten had also provided some tips about the local area which we found helpful.
I would definitely recommend the Islands Brygge area, and Morten's flat for any future visits!