Open early in the morning so you can get whatever (smokes, gum, water) before work, it's also right next to the bus stop - true convenience store. The guys who work here are pleasant and if you go more than two times remember you and are a little chatty. There are usually parking spaces out front or in front of the bicycle shop next door... They do have one of those wickedly expensive ATMs inside though, so I suggest walking down the street to the Cambridge Savings Bank (SUM) and using that instead of being charged some $2+ service fee.