Disclaimer: best is a subjective term, in this tip this term refers to central, busy, posh, active and safe zones of any city. for some people best might be a rural or quiet zone close to nature / mountains etc ..

The process is simple, launch google maps and search for the following:

  1. Posh/five star hotels
  2. Starbucks Cafes
  3. Apple store

in almost every city those landmarks are situated in or close to the best/happening areas.  

Example:

Warsaw

London