Definitely check out http://www.DC.CondoDomain.com for info on Georgetown properties, as well as http://www.DCCondoLoft.com for cool blogs and videos about Georgetown and surrounding areas!
I would say you might be able to find a condo scenario like you mentioined in the Foggy Bottom area, which is a short walk to Georgetown, and you could attract GW students.
If you would like the help of a Realtor I am happy to help. Let me know.
You can set up an automated search on my website.