I work in Downtown Mesa and I am pretty much an expert on the local eateries :)
This is my fave spot. I love the sandwiches (ask for the jalapeño cream cheese on any sandwich) and chicken dumpling soup they have sometimes kills me! So good.
If I want to splurge I get the Scotcheroo. It's huge ... Once I had one wrapped up and I ate it for four days.
I like to browse the boutique next door too, when I have time.