noun

the quality of being friendly; affability.

I was overwhelmed by the friendliness of the people here

affability,amiability,geniality,congeniality,cordiality,good nature,good humour,warmth,affection,affectionateness,demonstrativeness,conviviality,joviality,companionability,companionableness,sociability,gregariousness,clubbability,comradeship,neighbourliness,hospitableness,approachability,accessibility,easy-going manner,communicativeness,openness,lack of reservation,lack of inhibition,good-naturedness,kindness,kindliness,sympathy,amenability,benevolence,bonhomie,chumminess,palliness,clubbiness,mateyness,decency