Throwing my 2 cents out here.

Other comments state your partner works on the Hill. You could live in Mt. Vernon (artsy historic neighborhood in Baltimore) near Penn Station. The MARC train is pretty painless and the neighborhood is pretty fun. Grab some under 40yr/o (very) cheap tickets at the BSO and Centerstage for some top tier entertainment. Plan to go to the Everyman theater on pay-what-you-can nights and splurge on tickets at the Hippodrome occasionally. Regularly visit the Walters and BMA art museums (both free). Enjoy some excellent bars like the Brewers Art, Owl Bar, and Wet City. Enjoy walking literally a few blocks to get to the dentist, doctor, and gym (if your apt doesn't have one).

Same advice as some other comments, really, just wanted to give my personal take from doing exactly the above for a few years.