Question: What are the current guidelines for visitors to immigration detention centers?

Answer passage (source: Australia):
page_title: Leaving Australia
section_headers: Non-citizens
section_content: Due to the current COVID-19 situation in Australia, including state and
territory border restrictions, business closures and social distancing
requirements, international visitors are encouraged to return home when
possible to do so.
Temporary visa holders should be aware that if they wish to return to
Australia while COVID-19 restrictions are in place, they will generally need a
travel exemption. For more information about the Commissioner’s Exemption, see
Coming to Australia.

Reviewer feedback on this answer:
This answer says nothihng about detention centers.
This does not answer the question. The question is asking for information on visitors guidelines to the immigration detention centers and the answer provides information on the recommendation for international visitors to return to their home country as soon as possible due to the Covid-19 pandemic.

Reviewer ratings:
Bad
Bad

Answer passage (source: Australia):
page_title: Immigration detention
section_headers: ​Religious services
section_content: It has been observed that most religious groups are self-electing to cease
visits to detention facilities as they adhere to the measures being
implemented within the community.
Each detention facility has a Religious Liaison Officer (RLO) who is working
with a number of religious groups to ensure alternate methods for religious
observance. In some cases, pre-recorded services are being made available
where a religious group does not have an alternate means to provide remote
services.

Reviewer feedback on this answer:
This answer is irrelevant to the question. This answer provides information on religious activities in detention facility and does not provide any information on the guidelines for visitors to the immigration detention centers as asked in the question.
While this answer does mention detention centers, it does not detail specific guidelines.

Reviewer ratings:
Bad
Could be Improved

Answer passage (source: Australia):
page_title: Immigration detention
section_headers: Detention visitor program closure 
section_content: The immigration detention visitor program was
ceased on 24 March 2020. These measures are NOT permanent and we will
continually review them.
There are no confirmed cases of COVID-19 within the immigration detention
network.
As community transmission of COVID-19 increases within Australia, our key
focus is preventing the entry of COVID-19 to facilities.
We are committed to the health and safety of detainees and staff.
The changes are consistent with those in the community and we will continue to
put in place measures in detention facilities in line with advice from the
Department of Health and the broader Commonwealth response.These are being
regularly reviewed.
Each detainee will receive a $20 phone credit each week to support ongoing
contact with family and community groups via their personal devices. This will
continue until the measures are lifted for the visits program. We understand
the important role visitors play in detainees' health and wellbeing.
The decision to cease visits has been carefully considered in relation to
social distancing and measures across all States and Territories around public
gatherings and current health advice. ​

Reviewer feedback on this answer:
This answer does not mention guidelines about detention center visitation.
This is a direct answer to the question. It provides information that the immigration detention visitor program was ceased on 24 March 2020 due to Covid-19 and detainees are given phone credit each week to keep in touch with their family and community until the measures are lifted for the visits program.

Reviewer ratings:
Could be Improved
Excellent