Zack was the most gracious, thoughtful, communicative, and detail-oriented host I have ever had! His home was lovely, very comfortable and luxurious, with all the amenities you could want and lots of privacy with 2 bdrms and 2 bath - which was a tremendous source of comfort after a week of very long work days. It even made it possible to work so hard with grace, and to pull through a cold and still be productive. He was very flexible and helpful with our coming and going time and was solicitous without it being intrusive at all - he contacted us to make sure everything was fine. Zack lives upstairs so I imagine he could and seemed very willing to help with anything that might come up. He had recommendations on places to eat and visit, and he even mailed us our keys which we'd left at his house! He gave us delicious watermelon margaritas and homemade roast nuts as a parting gift - to boot! I would highly recommend staying with Zack in his lovely home, and that is before I even talk about the location which is marvelously central to all the sites in DC - to the metro and to many bus lines that criss cross the city. And is quiet despite being right next to a strip of great restaurants and night life. Perfect for work or pleasure: I can't praise him and the place enough! I'd love to go back! Thanks Zack!