I've been going to Pure & Simple for years and also use many of their products.
I love the fact that many of their facials come with relaxing arm, leg or scalp massage. Heavenly. Note - your hair may get a bit oily during certain treatments, I always schedule mine at the end of the day before heading home from work. But the scalp massage is so worth it.
Love the fact that the products are natural and not tested on animals. They don't product push, just make recommendations and give samples first if requested. They also have monthly specials on both product and services. Monthly e-mail to keep you in the loop.
It's not a fancy spa, but it's great quality and service.