We were a group of four people attending a conference at the Bella Center (10-15 min walking distance from the apartment. The place is functional, clean and Arne & Annette were always helpful if there was any question (though we didn't meet in person). Although the apartment is located outside the Copenhagen city centre, one can easily reach the centre by metro or several bus lines that serve stations in vicinity of the apartment. I would absolutely recommend to stay at Arne & Annette's place.