How do i get to Silka Seaview Hotel from Kowloon Station?

Take Tung Chung Line to Hong Kong Station first. Then walk to Central Station and take Tsuen Wan Line to Yau Ma Tei Station, Exit C. After arriving, walk southwest around 150 yards and find your hotel.
In addition, yes. To Kowloon Station, children under 3 years old can enjoy free ride. Kids between 3 and 11 years old costs 45 HKD. And kids above 3 years old need to purchase the full price ticket. :)