Here's what Michael and Sarah said about their lovely accommodation:
"We are happy to do a Tango Special to people who mention it when they book, free entry to Milonga and $70 a night." That's a great deal.
A queen room with ensuite: https://www.airbnb.co.nz/rooms/4070611
A double with ensuite (self contained sleep-out): https://www.airbnb.co.nz/rooms/8033596
See you in Christchurch!!