Katja's place is fantastic: a townhouse on a large complex, surrounded by very friendly neighbours and on an excellent location to explore Copenhagen. We used our car to get around (free parking near the house was a plus), so I can't comment on the access to public transportation, but my understanding is that it is pretty easy. The house was very clean, well appointed and very comfortable, with a fantastic atmosphere. And Katja was an impeccable host: very quick to reply, and willing to accommodate for some of the last minute changes my group has requested ... thanks again, Katja!