ap·proach·able
 /əˈproʊʧəbəl/  adj  
  1 [more ~; most ~] : easy to talk to or deal with
   The supervisor is quite approachable, so don't hesitate to bring up any problems you have.
   The topic is complex but the book itself is very approachable.
  — opposite unapproachable
  2 not used before a noun : able to be reached or approached
   The cabin is approachable from several directions.
  ap·proach·abil·i·ty /əˌproʊʧəˈbıləti/  noun   [  noncount  ]
   He's known for his approachability.