We will be staying somewhere on Waterloo Road near the Metropark Hotel, Kowloon, Hong Kong.

I will take the Metropark Hotel as an example. The airport bus A21 can't arrive at the Metropark Hotel directly. Instead, you can take bus no.E21 at the Airport (Ground Transportation Center) and get off at Lantau Link Toll Plaza. Then transfer the bus no.E21A to Pui Ching Middle School, and walk ahead you may find the hotel. The total ticket fare is HK$14. And the duration is around 1.5 hours.