Does the airport shuttle bus stop at Holiday Inn Express in Causeway Bay?

The free shuttle bus doesn't stop at the hotel. But, you may take Airport Express train from HKIA to HK Station for HKD 100 (about 25 minutes). Then, take free shuttle bus line H2 to Stop 2: Metropark Hotel Causeway Bay. Then, walk southeast for about 250 yards to the hotel.

Or, you can take bus line A11 from HKIA to Wan Chai Fire Station, Hennessy Road Station. The fare is HKD 40, and the trip takes about 65 minutes. Upon arrival, walk south for about 200 yards to the hotel.