Lettieri is a clean and relaxing place that offers coffee, espresso drinks, a variety of organic teas, fresh juice, smoothies (dairy & non-dairy), pastries and more. Most of the staff I've encountered here are efficient and friendly.
I've been here many times and enjoy drinking their smoothies on the patio during a hot summer day. Besides the smoothie beverage, I find their coffee and teas to suffer. The coffee here has always been too weak and their loose-leaf organic green tea tastes so bitter and burnt. Also, I find their drinks to be a little pricey.
I drop by with friends once in a while, but I don't think Lettieri is anything special; it's okay.