Karen's apartment is not that spacious, but an en-suite apartment and you can find anything you need in there. Lots of leaflet about travelling around Christchurch inside the apartment. A little bit far from the interchange bus (10-15mins walking, depends on whether you have luggages or not), but we do feel safe when staying here. To go to the airport from the apartment, you guys can book supershuttle bus online and they will pick you up right in front of the apartment, cost 25$/2ppls, better than walkinh to interchange bus stop and still have to pay 17$/2ppls.