Carstens flat was a perfect base for me and my girlfriends stay i Copenhagen. It's central, easy comute to Castrup airport, and good starting point for exploring Copenhagen. The place is roomy, and you get a sense of privacy. Carsten is a friendly host, who is more than willing to point out sights to see in the city. He also got two bikes, and Copenhagen is a great bike city, we didn't take him up on the offer to use them but it is recomended :-) We enjoyed our stay, as I'll think anyone who'll stay there will :-)