Little was also told that the staff member has been vaccinated, he said.
A spokesman told the Herald officials investigating the case have not yet identified any clear evidence of in-facility transmission.
"The worker is fully vaccinated, has been regularly tested and is now isolating in a quarantine facility," he said.
"The hours worked by the [staffer] means they had limited contact with guests at this hotel."
Two close contacts of the worker have also since been identified, the spokesman said.
"Both are household contacts of the case."
The hotel, on the corner of Customs St East and Gore St, is one of several managed isolation facilities in downtown Auckland.