The 75 steps up to the top floor and the open shower needed some getting used to but I definitely liked my room, my (hard) bed and the general coziness of the apartment. Cathrine always answered quickly and took some time to give me some tipps and talk for a while when I arrived.
There is a supermarket right downstairs and just around the corner Leo's Pizza, a lively Italian speaking place with great food.
The location is really good as well, so I walked everywhere from Frederiksberg to Tivoli and the palaces (I highly recommend the Copenhagen Card if you are into visiting such places!) to Nyhavn and the Little Mermaid on foot, but of course you are free to take some other means of transportation (also included in the Cph Card).
All in all it was a really nice stay!