No one knows when the families of those killed on Malaysian Airways Flight MH370 will start arriving in Perth, Western Australia, but when they do, the state government wants to do everything it can to ease their pain and suffering.

"We don't know numbers as yet," said Danielle Benda, senior media adviser to state Premier Colin Barnett.

There have been some suggestions of up to 1,000 people, which will put a strain on this city's already limited hotel resources.