DC-area Chowhound here who will be in Cambridge (without a car) on Monday and Tuesday. Anything new and/or nonobvious (or undiscovered) within shouting distance (or an easy t-ride) of Harvard Square? I have a few ideas already for a possible nice (that is, quasi-upscale) meal, but I'm looking for good casual eats, including some where I may be eating alone. I know already about Zoe's, Pinocchio's, and Tacos Lupita (but would of course love to get updates and/or favorite orders there). Any surefire breakfast suggestions?
Thanks very much in advance.