The apartments on top of the eight-floor hotel are home to about 300 people, many of whom are older and at higher risk of severe complications or death if they catch the Covid-19 coronavirus.
One, who asked to be known only as Jill, said the hotel had told them that busloads of returning travellers would arrive tomorrow.
She said she did not believe the hotel was suitable for quarantining people from overseas who may be carrying the virus.
"There are a number of shared areas, the apartments of which there are approximately 159 on top of the hotel - we share the corridors to go through to our carparks, we also of course share the fire egress."
She said the residents only found out about the plan yesterday.
"I know other residents have spent the afternoon trying to contact councils, ministry of health and officials that go through and say 'there is a real risk'."
Jill said the residents on top of the eight-floor hotel would have to use shared spaces in the event of an emergency.
Speaking at a media conference this afternoon, where he revealed that the country had two new cases of Covid-19, director general of health Dr Ashley Bloomfield said Air Commodore Webb would be addressing that issue and issue a statement later today.
"The point I will make is that over the two months to the beginning of June when we've been using managed isolation facilities, we have not seen any new infections as a result. So our procedures are good."
He said that included no new infections for staff, who have been tested, especially during alert levels three and four.
"We're now in a position where we will have caught up with (tested) everybody who will have come in from June the 9th."
He said the issue with shared facilities was ensuring that people were separated. He has visited one and the extent that processes were in place was "quite remarkable".
"It's an ongoing work but I will point to the fact that we have not had any cases coming out of our managed isolation facilities in over 19,000 Kiwis that have come through in the past couple of months."
Covid-19 has infected more than 8.5 million people worldwide since it began spreading from China late last year, and had killed more than 450,000.
