Absolutely! Boston is expensive, I'd stay outside of the city if money is an issue, but parking in Boston can be a pain, too. Once you get to your hotel, ask the folks there how best to get into the city.
If you have time to go exploring, I'd check out Maine, Vermont, and New Hampshire while you're here. Northern New England should have beautiful fall foliage in mid/late September, in Massachusetts the peak is usually the second week of October. There's lots to see and do all over New England, depending on what you're into. Each state has their own tourism web site, that might be a place to look.
Oh, and be careful about calling us americans "yanks" in Boston, especially during this part of the baseball season. When we hear the word "yankee" we think of the baseball team New York Yankees, the biggest rival to the Boston Red Sox. Folks around here tend to get a little fanatic, in a good way, though :-)
Hope you have a great vacation!