Auckland's Hilton hotel is adding 21 rooms on its top floor in the area that used to be a luxury apartment.

The work comes as the chain celebrates 100 years and aggressively expands around the world.

The hotel on Princes Wharf is gearing up for a forecast surge of visitors in the city for the America's Cup in 2021 and for Apec meeting later that year.

During summer, the hotel can charge well over $1000 for its suites and the eighth-floor transformation will add to 166 rooms and suites already in the hotel on Princes Wharf.


It will include a