I used to live in Boston, but haven't been there for many years and my parents have a request for a "really tasty and elegant lunch" for this coming Friday the 14th.
I would interpret this as well prepared food but not ultra-high end. Anywhere in Boston, Cambridge and Brookline would be fine. Fusion, ethnic or contemporary would work. My dad says that this is a test for Chowhound. I told him you wouldn't let him down!