Mark’s house is a large, beautiful 19th c. row house with tons of original elements and a great feel. Mark himself is urbane and genial, and seems to really enjoy providing a temporary living space for worldly itinerants. He rents out most of the rooms in the house, so there’s a fair chance other guests will be around at any one time, but the house is accommodating and there’s not a space issue. (My stay, though, happened to include a few days when the house was almost empty, which was great.) The upstairs front bedroom is airy and light and was a pleasant place to hang out or work while looking out over city rooftops. The bed was a bit uncomfortable, though: hard but with lumps, strangely. I also stayed in one of the smaller rooms, which, although a bit dark, was quite comfortable. Mark especially brought in a little desk for me. The neighborhood is stellar: lovely architecture and close to several DC hubs of activity as well as public transportation.