It’s definitely a bach (Kiwi for holiday home).
I used to think bach was pronounced like the composer (instead of like "batch"). And my husband never lets me forget it.
Please don’t get him started on how I used to say Dunedin (“Dune-din”).
My husband has painted three sides of our house. The fourth side is not being painted. And no, these windows are not double-glazed. Our landlords totally have a cash flow problem.