This place is great. The people are nice, the coffee is so good, and the free wi-fi is definitely a bonus. My only complaint? That it isn't in my neighborhood.
That said, I go to Copper Star for the coffee. I could go somewhere closer, like one of the three coffee places within walking distance, but Copper Star does it better. The various bakery treats are okay, nothing phenomenal but certainly edible. I can't comment on the sandwiches, never having had one.
The tiny patio is nice for cooler weather or enjoying the day with your canine companion. Be warned, it fills up fast with only two tables.
ETA: Chocolate chip cookies have recently been added to the baked goods line- up, and man- are they amazing.