speak highly of
speak highly of (someone or something)
To enthusiastically endorse someone or something; to extol the virtues, benefits, or good qualities of someone or something. Our manager has spoken highly of these new developers. I hope they're up to the job! My dad has been speaking highly of this smartphone, so I think I might buy one for myself.
speak highly of someone or something
1. [for someone] to say good things about someone or something. she always speaks highly of you. Everyone spoke highly of this movie, but it is not good.
2. [for a fact] to reflect well on someone or something. The success of your project speaks highly of you. All of this good news speaks highly of your ability to influence people.