Karina wasn't home during our stay in Copenhagen, her friend Steph has received us with great hospitality. The bus connection to the center was very good. we never had to wait more than 5 minutes for a bus.
The apartment was as we expected it. Personally the only downside of the room was the curtains. For me it was way too bright at night due to the really thin curtains, but for my girlfriend this wasn't a problem.