The localisation is ideal (about 20 minutes from the center by bike), Michael and his mother are very welcoming and easy (they let us do the checkout later than planned, which was very convenient), and the flat is clean, cosy and well equipped.
Just 2 little things to know if you are good sleepers : the neighbour's kid upstairs is very noisy on the morning, and bedroom curtains aren't really efficient, so get a sleeping mask if you don't like to be awaked by the light.
Anyway, this is a perfect place to enjoy your stay in Copenhague : I highly recommand !