How do I get to the Crown Plaza Kowloon east Hong Kong from the airport, by MTR?

There is no subway that can take you to the hotel directly. You need to transfer. Take airport express to Tsing Yi Station first. Then take Tung Chung Line to Lai King Station and transfer to Tsuen Wan Line to Prince Edward Station. After that, take Kwun Tong Line to Tiu Keng Leng Station and transfer to Tsueng Kwan O Line to Tseung Kwan O Station, Exit C. After arriving, walk to the hotel directly.

Or you can take bus no. E22A at Airport (Ground Transportation Centre), and get off at Tseung Kwan O Station, Po Yap Road. Then walk to your hotel.

You can choose the way you like. :-)