Refugees and asylum seekers hang signs made from bin bags over the balconies at the hotel in Kangaroo Point, Brisbane.

Every room in this hotel is booked. But the guests are not allowed to leave

Updated 0108 GMT (0908 HKT) June 20, 2020

Brisbane, Australia (CNN)Every day, the men unfurl large pleas for help over the balcony railings of their hotel room and stand in silence as traffic roars along the main road of the Australian city they're trapped in.

Their signs are mostly made from bin bags stuck together with tape, and secured to the railing with shoelaces.
"Where is justice?" one reads.
These men are not hotel guests, but refugees and asylum seekers who have been in Australian immigration custody for seven years. Many arrived in Australian waters in 2013, after the government introduced offshore immigration processing. They were detained on the remote islands of Manus in Papua New Guinea (PNG) and on Nauru in the Pacific, in conditions once described by the United Nations as "harsh" and "inadequate." In 2016, Amnesty International called Nauru an "open-air prison."
All are suffering the effects of prolonged, indefinite detention and were brought to Australia last year for urgent medical treatment.
But some say the conditions in the Brisbane hotel are worse than PNG or Nauru.
"You're in prison in here. In PNG, you have a little bit of freedom. You can move around. There is no ABF (Australian Border Force), no security guards around you," said Farhad Rahmati, an Iranian refugee who was transferred to Australia from PNG last July.
For months, the 120 or so men inside the hotel kept quiet about their plight. However that changed in March, when the number of coronavirus cases in Brisbane started rising. Fearing the virus would enter the hotel via the guards who come and go, they crafted signs large enough to be seen from the street.
As people noticed their pleas, weekly demonstrations began outside the hotel. These demonstrations have now escalated into a blockade by human rights activists who are demanding the men be freed.
The standoff between cellphone-armed protesters and security guards has cast unwanted attention on an Australian immigration policy that has long been, by definition, focused offshore.
Now it's playing out in the heart of one of Australia's largest cities in a 4.5-star hotel that only a few months ago was still accepting paying guests.