= The Inner Harbor is the most touristy area there ever was. I'd recommend staying far away from it. If you like touristy things that you can do at any city, like visit Cheesecake Factory and buy t-shirts with crabs on them, go for it.
Go to Hampden, which is also turning really touristy, but in a more charming way. They have lots of little boutiques, art galleries, and vintage shops. Visit the Baltimore Museum of Art. Good places to eat include the Hon Cafe (in Hampden), Burke's, which is by the Inner Harbor, the Paper Moon Diner, and anywhere in Little Italy. The cheapest place there is Amici's. I also recommend seeing a movie at the Charles Theater. Two good restaurants there are Tapas Teatro and Sophie's Crepes, which are both right next door.
If and only if you are capable of engaging in an extended discussion regarding underground music, I recommend hitting up Charm City Art Space. It is an awesome place, but they may judge you if you don't fit in.