South Boston and the South End are two different, but adjacent neighborhoods. Both are highly desirable neighborhoods, but they are both city neighborhoods. The bus is a good option, however, and a taxi is probably only 12-15 dollars in an emergency. Because Boston is a "walking" neighborhood, one street a mile long can be vastly different. While the map shows South Boston as a very close walk to the BMC, you should know that the transitional strip of land, the railroad tracks and freeway over passes are NOT safe places to walk. That said, 1/2 a mile a way into either South End or South Boston, you have nothing to worry about as long as you are reasonably alert and understand that you are living in a big city. There are a number of car break ins, some vandalism, occasional muggings, even in good neighborhoods. Be vigilant, and don't park expensive cars on the street!