I warmly recommend B's place!
I stayed there for 4 nights.
B is a super nice and caring host, makes you feel very safe and comfortable.
Everything is clean, and in your room you have everything you need + a lot of space.
After staying in many airbnb's (also in Copenhagen), I can say that there are all kinds of small details that you don't find anywhere, but can really matter and make your stay so much more pleasant, and B really puts mind into those details (just for example - a dark curtain for the sun in the morning, a night-light right next to your bed, hangers, quality shampoos, stuff like that) .
The design is indeed inspired by simplicity and high quality. Very typical Danish for whoever wants to get to know the culture from inside.
The location is nice, quiet and central, and the public transportation is convenient.
,I would definitely come back again
If I had the option ;-)