Great place to stay in a nice neigbourhood!
The place is very easy to reach from the airport (metro M2 in the direction of Vanlose, 11 minutes to the stop Christianshavn which is around the corner). AirBnB shows a slightly different location on the map, the address is Mikkel Vibes Gade.
The appartment is wonderful and has everything you need. Even beautiful art made by the owner(s) :)
The only downside I can think of, is that the street can be noisy during weekend/holiday nights, so if you are a very light sleeper, that might be something to consider.
But I would definitely come back!