Which bus to take from the airport to Metropark Hotel Kowloon?

You are suggested to take bus no.E21 to get to Lantau Link Toll Plaza first. Then transfer to bus no.E21A to arrive at CLP Power, Argyle Street. It takes around 90 mins on the way. The ticket fare is 14 HKD per person. After arriving, walk south around 180 yards (150 meters) to find the hotel.