Nice option outside the city!
Recently spent one night at the Courtyard Boston-South Boston. Selected location because of the FREE parking and proximity to city. My GPS did not recognize address but if you call the hotel they'll give you a different address--Allstate Street. 
The hotel is behind a Best Buy and central shopping plaza. There is an Applebees, Panera Bread and Olive Garden at the plaza so you can easily find places to eat or grab a snack. I did use the internet while there and found it to be quick and easy to access. Overall hotel is clean and well maitained. Couch in room was "worn" but for a one night visit that was okay. Excellent option for thrifty travelers seeking a safe, reliable and convenient location while in the Boston area.