i'am going to stay in elan inn guanzhou baiyun airport hotel, i am coming to attend canton fair

i'am going to stay in elan inn guanzhou baiyun airport hotel, and iam going to attend the canton fair
i will be staying for 10-19 days,what is the best transportation to go every day there and come back to my stay, my nearest metro station is renhe station. What will be the best for me and what will be the fare.