na-adjective
social; sociable; conversational
Describes an atmosphere, gathering, or person that is relaxed, cultured, and conducive to conversation, like a salon. Often implies a certain intellectual or artistic refinement.
彼の家はいつもサロン的な雰囲気で、いろんな人が集まる。
His house always has a salon-like atmosphere, and all sorts of people gather there.
サロン的な会話を楽しむのが好き
I enjoy salon-style conversation.
na-adjective
Carries a slightly negative nuance of being limited to a select group, not open to everyone. Often used for communities or events that feel closed or elitist.
あの研究会はサロン的で、新入りが入りにくい。
That study group is cliquish, making it hard for newcomers to join.
サロン的な集まりには招待されないと入れない。
You can't get into an exclusive gathering unless you're invited.