Thanks for this.
I used to work right near there when I first moved to DC. Nice office, hellish job. Luckily Clyde's was nearby for much-needed happy hours.
I don't know much about bus routes in DC, but I would check out the Connector also, since I think one of its routes goes to Georgetown. It would be about a 15-minute walk from the Foggy Bottom metro, if you want to consider rail.
I'm still trying to figure out my schedule for Thursday, but I'm hoping I can make this.