Cheapest and more reliable Transport from "HKIA" to "Tsim Sha Tsui"?

Hi,
We are 2 Adults & 1 child (age 5) with 2 big luggage's. We'll be arriving at HKIA at 7 AM.

Can you please let me know the Cheapest & more reliable transport from HK International Airport to "Best Western Grand hotel" which is located in this address (23 Austin Ave, Tsim Sha Tsui, Hong Kong)?

And the transit fare also please.

Thanks!