There is no single best side of Hong Kong. The right choice depends on whether you prefer skyline views, older streets, shopping, museums or a more residential atmosphere.
Hong Kong Island
Central, Sheung Wan and Wan Chai offer dense urban contrasts, steep streets and easy access to the Peak area.
Kowloon
Tsim Sha Tsui, Jordan, Yau Ma Tei and Mong Kok provide strong street-level atmosphere and many food options.
For views
Kowloon often gives you the classic outward-looking skyline perspective.
For hiking
Hong Kong Island gives quick access to hills and country-park routes.
For families
Both sides work well; choose based on the specific attractions you want to combine.