We are staying at an apartment called 21 Whitfield. How do we get there from hong kong airport?

Well, there is no direct shuttle bus service to the hotel. So, you may take Airport Express Line to HK Station, and then change to Island Line to Tin Hau Station, Exit A2. Afterwards, walk north along Electric Road for about 400 yards, and you can see it. It costs HKD 100, and the duration is about 1 hour.

Also, you may take bus line A11 from Airport (Ground Transport Center) to Gordon Road Station, and you can see the hotel. It takes about 75 minutes, and the bus fare is HKD 40.