My daughter and I had a lovely stay at Emma and Warwicks Airbnb. Emma (our main contact) went over and beyond our expectations of comfort, inclusion to family and Christchurch life, hospitality and home comforts were never too much.
The local bus could be caught just around the corner; you need cash for this facility. A metro card could be purchased at the local library if you are staying any longer than 5 days, otherwise $4.20 was the cost of the bus ride into the city. This is a 1/2 price fee which is available until March 2023 when the fees will again be increased.
Emma was very kind in picking us up from the airport for a very reasonable fare as well, which enabled us to get our bearings and rest up before embarking on our adventures. There is a supermarket in New Brighton which is 3.8 kms away plus other facilities such as 'Saturdays' cafe for good coffee and brunch (just behind He Puna Taimoana Hot Pools,) or I've heard 'Switch' New Brighton is very good too