I wasn't right in downtown Boston but a bit north, I often parked between a few different Walmarts in the area or at the office park the company I worked for had their office in.

Though I guess I phrased that a bit poorly, I spent Dec-Mar in the Boston area and fled south after some significant snowfall in January and February (record breaking snow in 2015). While moving it was almost always in rest areas or trail heads (backpacking on the weekends).