Play was held up during the Australian Open men's final on Sunday when a banner was unfurled protesting against the treatment of refugees, with one person jumping on centre court.
The arrival of Novak Djokovic led to incongruous scenes outside the hotel, with members of the Serbian expatriate community draped in the national flag and playing traditional music joining refugee activists in protests.
The White House says President Trump is 'extremely upset' with the 'poorly-crafted' refugee deal with Australia.