I may severely dislike certain people but acknowledge their undeniable good judgment. Being reasonably honest, I'll tell as much if asked for a reference.

Anything that involves a word like "good" instead of something numeric is hard to objectively measure. But if your aim is not science but hiring, you learn to trust your gut and other unscientific instruments. (Human vision is very much flawed as a scientific instrument, but it helps do complex things nonetheless. Same with human judgment.)