This letter praises a company for superior service.
1234, Main Street
Boston, MA 02123
<Recipient Address Goes Here>
I recently came to your company for <service>. My experience was one of the most satisfying I have ever enjoyed with <a/an> <description of business>.
In an age when so many companies don't seem to care about customer service any more, <name of business> does everything you claim you do, with a smile. I am one satisfied customer, and will continue to be for years to come. Thank you for your time.