If I want to get to Cityview Hotel by Mtr from HK international airport? Please advise.

Take Airport Express to Tsing Yi Station, where transfer to Tung Chung line to Lai King. Then transfer to Tsuen Wan line to get off at Yau Ma Tei Station, which is within walking distance from your hotel.

Or you can take the AirportExpress can take you to Kowloon Station and then transfer to free shuttle bus no. K5 to your hotel directly.