Just had a sandwich for the first time at Centro, which is a coffee shop located in Prudential Plaza (Lake and Stetson). Though premade, the sandwich was awesome. I had one that had prosciutto, artichoke hearts, fresh mozzarella, and a balsamic glaze. It was delicious. The bread they use is excellent...not unlike a Bari sub.
They have mostly Italian meats, but also a caprese sandwich, tuna salad, chicken salad, etc. Also make great coffee (Cafe Umbria brand I think).
I thought this was kind of a hidden gem, so if you are in the area check it out.