bonhomie - friendliness
‘Bonhomie’ is a formal word that can be used to describe a person who is regarded as having a happy, good-natured demeanour and who is also very approachable. It can also be used to express a convivial and friendly atmosphere among a group of people, particularly in a professional context. The term has only positive connotations.
Emilia is always full of bonhomie. Everybody finds her approachable and a joy to be around.
I love working in that office. The cheerful bonhomie among the staff makes every day there enjoyable.
The bonhomie between the two politicians in front of the cameras belied the tensions that existed behind the scenes.