Well, I don't know if this helps anyone or not, but here's a little information about getting around Boston.
I'm taking the train, but from my understanding the bus terminal is in the same place, near the Red Line stop of South Station. Schedules can be found online at the MBTA website, previously linked in this thread.
If, like me, you're staying at the Amerisuite in Medford, you're going to get off one stop north on the Red Line, Downtown Crossing, at get on the Orange Line heading north (outbound). Get off at the Wellington Station stop. If you want to walk, you can follow the T north to 5th Street, and the turn left and go straight until you hit Riverside Ave. (which should be right in front of you). It looks like a bit of a walk, maybe 20 minutes, to get to the hotel. If you are lazy, like me, you can catch the 134 bus, which goes right down Riverside Ave. Get off around I-93, and you'll be close.
I'll be in Boston Thursday night and all day Friday, any ideas of what I should see?