I will be staying at Gulf International Hotel in Swatow. Plan to go to HK by ferry from Zhuhai.

Hi, since the hotel is in Shantou, you need to take bus from Shantou to ZH first. Upon your arrival, you can take a cab to Jiuzhou Port. Then you can find ferry from Jiuzhou Port to China Ferry Terminal or HK-Macau Ferry Terminal in HK. It is a little hard to estimate the cost.