My boyfriend and I had a fabulous weekend in Copenhagen staying in Frederikke's apartment. As other reviewers have said the apartment is gorgeous - it looks exactly like it does in the photos. I echo the review that say the bed is really comfy - I had the best night's sleep!
The location is perfect as a base for exploring Copenhagen as it's close to both the metro and a bus route into the main centre. We felt really safe in the neighbourhood. Being from London, we were surprised that restaurants and bars closed much earlier in Copenhagen than we're used to, so the 7/11 which is a short walk away (approx 5 mins) came in handy.
Communication with Frederikke was great - both before and during our stay. She gave us recommendations of lots of things to do and see, and also kindly left us guide books and a map for when we arrived. Any questions we had during our stay were answered promptly despite her being out of town. On the day of check out she also gave us the option of leaving our bags in the apartment and returning the keys later in the day - which we didn't do but really appreciated nonetheless!