You get
off Jinan University stop. Then take a taxi. It should be pretty
close.
Another
way is to take Bus #A21 to Hung Hom Station to take the train but
with luggages I think it is easier to have less up and down on
bus/train. Anyway, here is the citybus information:
If you
were to stay in Hong Kong to play for a day or two then to
Guangzhou, take MTR to Hung Hom Station.
Advise
everyone stopping in Hong Kong to buy an octopus card at the
airport. This card is used for all Hong Kong public
transportation (bus, MTR). It is a smart card. If you still have
money left in the card at the end, you can get a refund at the
airport as you leave. Otherwise, it is tidious to get changes for
buses and MTR.