please help me, how to get to starway hotel at midfle huanshi road from baiyun hotel in Guangzhou?

You can take the subway line 3 form the airport south station to Yantang Station, where you can transfer to line 6 to Quzhuang Station. Take the Exit A and walk about 30 yards, you will reach the hotel.

Or you can take the shuttle bus line 2A to Holiday Inn City Center. Then walk about 680 yards, you will reach the hotel.