Minus 5 - I think its the coolest (or coldest) indoor bar out there.
Sounds like a clone of Uniq in Helsinki, which has an indoor ice bar kept at -5C. The walls, bar and tables are made out of ice, they give you a parka. This never made much sense to me given that there is plenty of cold and ice available outdoors most of the year. I suppose it makes a lot more sense in SYD.