how do you address personal letter?

Question

I am writing a letter to a family that my son will stay with in Chile. How do I say Dear Mr. and Mrs. ?

Answer 1

I think that you might use:

Queridos señores (name) - more familiar

Estimados señores (name) - less familiar

Answer 2

Hi Lisa,

Izanoni's advice is perfect. But I assume you'll be back later to ask how to end the letter?

I think you'll find this very helpful: Writing Business and Personal Letters in Spanish

¡Buena suerte!