whats the best option for 2 ad/1 child to get from HKG airport 2 The Mira Hotel Nathan Rd at 10-11pm

You can take bus no. A21 at the airport and get off at Kimberley Road Station. After getting off, you can walk in several minutes to your hotel. It costs about 33 HK$ per person and takes about 5o min or a little longer. Don't worry! The bus is in operation from 06:00 to 24:00.