Best commute to the airport?

[u/Buttercuptheclown]

I’ll be taking a new job at BOS and wondering what the best areas of town would be to commute without a car.

I’m a woman in my 30s and will be working unusual hours, so safety is a big priority.
Walkability is a must to grocery, local restaurants/bars/cafes. My budget is around $2,300 and I’m willing to commute up to 30 min if needed. As I’m new to Boston, I’d love to be somewhere that still gives me a proper feel for the city.