First the great things: Location can not be beat. Walking distance to all museums and in town attractions, and less than 5 minute walk to Norreport station with public transit to literally EVERYWHERE else you would want to go. The communication with the apartment hosts was extremely timely and easy. And the apartment was very clean and well furnished.
Some mild concerns: there is no second lock on the apartment door to insure one’s security when inside the apartment and sleeping, as is found on every hotel room. Second, the apartment contains an electronic tablet on a stand to communicate with the hosts. While a nice idea, just be advised that the tablet contains both front and rear cameras, which have the possibility of being compromised to invade your privacy. We simply covered the tablet with a cloth.
We really enjoyed our stay at Aperon, and would not hesitate to book again if we were to return to Copenhagen.