Greg's place in Dupont Circle was fantastic. We would definitely go back. The location was superb with a two block walk to the Metro - we were almost anywhere in DC within 10 minutes or less (including wait time for the train).
The apartment itself was exactly as described - well kept, cozy, but roomy enough for the six of us. (four adults and two tweens). The kitchen had everything we needed to supplement the many fine restaurants nearby.
And Greg was a great and responsive host. Thanks so much - next time we're in DC, we'll hope to see your place open again!