I had a great 5-night stay at Carolina's place and would recommend it.
Pros: the location is awesome. Easy metro ride to/from the airport and easy to get around the city from. Grocery store right around the corner, as well as cafes & restaurants. The street itself is very quiet. The room is nice and spacious. The bed is very comfortable. AND I didn't see it in the photos but there is a desk space which was a big plus for me as I was doing some work while I was there. Also, for my stay, Carolina's daughter wasn't home often so I had the place mostly to myself. I never was waiting to take a shower or use any of the common spaces.
Cons: The wifi signal strength wasn't great from the bedroom. I was able to work from the kitchen some, so it wasn't a huge deal, but it meant I wasn't able to do work or stream video from the bedroom which was a bit of an inconvenience.
Neutral: I didn't meet Carolina in person or have much interaction with anyone while I was there (her godmother let me in and I did meet her daughter briefly in passing). I was fine with this however I could see for some guests that they would prefer to have the host around for tips/advice/etc.
Overall, I had a great time in Copenhagen and Carolina's apartment was pretty perfect for my needs.