The location of Sanders' apartment cannot be beat, just off the pedestrian walkway in Copenhagen - so convenient to restaurants, shops, the Metro, within walking distance of the canal, etc. The place was pretty comfortable, including the beds. However, one has to go up three flights of narrow stairs to get to the apartment, plus there is a flight of stairs in the apartment - something to keep in mind for those with mobility issues.
Another thing to note that the apartment fronts a very noisy courtyard, which includes a ground floor restaurant. We had to open the windows overnight (no AC), and there was a lot of noise both late at night and early morning.
I was disappointed that there was literally not another mirror in the whole place besides the one in the bathroom. For a place that sleeps 6 or more, this seemed a bit ridiculous. We were forced to use the mirror in a compact to get ready in the morning. Same with waste baskets. There was one teeny-tiny one in the bathroom and that was it.
Additionally, there was a small amount of instant coffee in the flat when we arrived. One person in our party had a couple of cups, which about finished it off. When I reached out to Sanders, I was told that he couldn't provide more. (So much for the 'breakfast' part of Airbnb!) I also had to buy dish soap because there was none. For the amount that we were paying, those things should have been cheerfully supplied.
All in all, I would still recommend it due to its amazing location - but particularly during cooler weather, when the windows don't have to be opened.