Me and my bf stayed at Stefanos place in december 2017. Although we didn't meet Stefanos in person he made everything possible to make sure we had all the information we needed and communication couldn't have been easier. From a week before arrival until the day we left, he was available for all the questions (if we should have had any). Getting to the appartment is easy thanks to the fantastic public transport in CPH. A metro and a bus was al we need. And to go to the city center it took only S-tog or bus and and again the metro. All in about 25 minutes. If you stay in winter and don't want to bike, the CPH citypass (48h or 72h) is great thing. But i can imagine in summer, renting a bike is a plus.
The appartement is cosy, clean and all you need for a nice and pleasant stay if u are two (that's a maximum) . Internet, kitchen utensils, ...all is there.
I can only recommend his place and for the next time (yes, there will be a next time) we hope to meet Stefanos in person and go have some drinks with him.