Hong Kong Airport to Hotel

If you wnat to travel from the airport to the hotel by MTR, you can take the airport express from the airport to Kowloon station, then take the free airport express bus K5 to Metropark Hotel Kowloon. It costs HKD90/person. A cheaper way for you is as this: take bus E21 from the airport to Lantau Link Toll Plaza and transfer to bus E21A. Then get off the bus at Man Kee Mansion, Waterloo Road, you will find the hotel on the opposite side of the bus stop. It costs HKD14/person. When back, you can take bus E21A from Metropark Hotel Kowloon, Waterloo Road to Lantau Link Toll Plaza, then take bus E21 to the airport.
Octopus can be used on transportation, retailing stores, parking, self-service, leisure facilities and access control and other places like some hospitals and schools displaying the Octopus logo. It is benefit for you. With an Octopus card, you may get a discound price when using the many transports in Hong Kong.