Here's a breakdown:
* Usted: The formal "you" in Spanish.
* es: "is"
* bastante: "quite," "fairly," or "pretty"
* querida: "dear" (feminine)
The phrase expresses affection or admiration for someone. It's a polite and respectful way to compliment someone, especially a woman.
Here are some possible interpretations depending on the context:
* Romantic interest: "You are very special to me."
* Friendship: "You are a dear friend."
* General appreciation: "I really appreciate you."
The phrase is often used in situations where the speaker wants to express warm feelings towards someone.