Good-natured; of good character—used prenominally to describe someone with a pleasant, well-mannered disposition.
彼女はたちの良い子だと先生が褒めていた。
The teacher praised her as a good-natured child.
あの近所の店主はたちの良い人として評判だ。
The shopkeeper in that neighborhood is reputed to be a good-natured person.
たちの良い友人に恵まれて幸せだ。
I'm fortunate to have good-natured friends.