Boston is a very walkable city. You should not drive--it is not worth the hassle. We have a subway system too, which is decent, but really, you can walk most places.
I am wondering what kind of food you are looking for--I'd be happy to recommend a few places near your hotel if I knew what cuisine you like.
After reading this thread, I have to tell you, though, that I do not recommend Legal Seafoods. I used to really like them, but in my opinion, they have really slipped in quality over the past few years, both in food and in service. Our most recent trip there (about a week ago--I know, why do I keep going back!) had many problems, including multiple service issues, the largest of which was our entrees being brought before the wine, an order of fishy, fishy softshell crabs that were not properly cleaned (a real shocker for Legal, as they are known for their quality product.), and ice cold onion strings.
If you do want to stop in at Legal, sit at the bar for their chowder and a glass of wine if you like wine. That's it, though, in my opinion!