I've visited Cachet many times.. mainly for the patio!
Never been a HUGE fan of the food, it really depends what you get. Pizza is good, once had a nice turkey sandwich. Went recently and found they removed their spinach dip off of their menu which made me sad. Instead, decided on dessert and ordered Creme Brûlée - it was cold.. Its seriously the atmosphere that makes this place. That patio is just awesome to hang out with a group of friends.
Normally I have excellent service, but upon my last visit, service was very slow and poor, although the waitress was pleasant!
I will go back again.. I would actually like to try food from their dinner menu, instead of the usual apps and lunch items I eat.