Jack's parents who also take care of the flat as co-hosts welcomed me in the flat. They were ultra friendly and unbelievable nice. They showed me everything I needed to know. I also met Jack who was as friendly as his parents.
The flat is directly next to the sky tower so there's is no way you could get lost. Moreover viaduct harbour (a crowded place concerning night life) can be reached by a short walk.
The flat itself is also a good choice since its very clean, has big living room and a kitchen, which can be used, as well as a possibility to do your laundry. However of you are into watching TV you will be disappointed because there's in none in the living room. You got your own room containing a very comfortable bed which can even be locked and a bathroom that you share with the guests of the other available room.
All in all I can just highly recommend you to book this room.