There was nothing about this stay that I could complain about, in vast contrast to our accommodation the last time we were in Copenhagen.
Lone is fantastic at communication - always responding within the hour, often in minutes. She was there for us to check in early, and gave us the the option to check out later, which went a long way towards making check in/out pleasant. We knew our way around town, but she was prepared with recommendations of her own, which for a first time visitor would have been great.
Her apartment is very pleasant to stay in: warm, clean, spacious. The bed is comfortable, and the shower, although unconventional, is accommodating. The dishwasher is extremely convenient, and the kitchen is well equipped with the basic tools.
The only nuisance that we (or rather the girls of our group) had, it is that the only mirror is in the bathroom, which understandably does not have an electrical socket, so drying hair in front of a mirror (which is apparently what girls do) was impossible. We solved this with an iPad, which made for a hilarious video, so no harm whatsoever!
In terms of location, the apartment is located in a safe-feeling residential area, about 35 minutes by foot from the center, a distance we walked more than a few times. Alternatively, it is several minutes from a bus line which takes you there in another 5-7, which we also used with great satisfaction. There are several supermarkets in the area, but most attractions are located towards the center. There are two ways to get to the flat from the airport, both painless: by train until the Norrebro station, or by M2 metro, then bus 5A or 66. We took the latter, it was very simple and quick.

I have no hesitation recommending that you stay at Lone's apartment, and will gladly consider staying there again in the future.