This GA report supplements the End of Mission statement and
puts the mandate report into the permanent record of the United Nations.
The link is here: https://www.ohchr.org/en/documents/thematic-reports/a78520-report-special-rapporteur-promotion-and-protection-human-rights
It may also be useful to listen to the interventions of Member States in the interactive dialogue, a number of whom made strong statements about the necessary closure of the facility as well as reparation and remedy to those previously and currently detained there.
The link to the interactive dialogue is here:
https://media.un.org/en/asset/k1u/k1u6y61hz3