don't live on the non-northeastern side of ruggles st, or anywhere along melnea cass blvd. And for that matter, I wouldn't even recommend going into that area. Roxbury is a place to avoid. Some parts are nice, but they would most likely be out of your price ranger. Dorchester is similar, though dorchester, the further south/away from the city you go, the better it gets. Down by quincy/milton area it isn't bad, but you're no longer right in the city.
Southie isn't bad. Might as well be called the irish district. North end isn't bad either. (italian)
The hospitals are all along mission hill area, which isnt bad, though it becomes inundated with college kids in the winter, and depending on how close you are, sox fans/traffic every game day.
The T is....decent. Compare it with any other major cities mass transit, and it somewhat sucks, but it gets the job done.
red line can be inconsistent as hell. (2 trains in 45 seconds, then none for 25 minutes)
green line is just driven by assholes who dont know how to brake gradually. Always packed too.
orange line generally leads to nowhere good. (unless you want to go hang out at dwight's hood celebrity-haircuts and rims in 1 place)