We didn't enjoy our stay at Elio's place and ended up moving out and booking into a hotel. A lot of what Elio says about the place in his description is true - the location is fantastic and central, the street has a great vibe with many great looking cafes and clubs, and his apartment is located in a back courtyard away from the noise of the street.
Some of the reviewers have mentioned a couple of the limitations of the property - it is on the second floor up a very narrow flight of stairs which is very challenging if you have heavy suitcases. The hot water system is small so any use of hot water needs to be spaced to allow it to reheat.
We found the apartment more bohemian than we expected. The shower head had holes in the sides and sprayed water in all directions, the shower is truly tiny and a challenge for larger framed people like myself, the linen is quite old and didn't fit the double bed properly so the base sheet kept getting untucked every time we turned in the bed, despite what others have said we found the beds small and uncomfortable, and the floors creaked loudly every time we stepped out of bed.
Perhaps the major issue we had was the arrangement of the bedrooms. We were travelling with an adult daughter who understandably wanted privacy so we booked a 2 bedroom apartment. However, her bedroom was really a second living room with 2 single beds which had an open archway to the main living area with no door. In addition, the only way to access the main double bedroom was to go through her bedroom. Just to make her more self conscience, her bed creaked every time she moved.
This apartment is in a great location and for many guests, it clearly works really well. However, we came to Copenhagen with some sickness and ultimately the university student feel of the apartment proved overwhelming so we ended up booking a hotel with a working shower, nice linen and a comfortable bed. By all means book Elio's apartment because the location is fantastic but be aware it is small and has some limitations.