Matthias is an excellent host. The apartment is a very spacious studio with a full kitchen (apartment-sized, but complete), a washer/dryer, and a private bath (shower only).
For me the location was ideal, but I'm local and had a specific need for just that spot. For tourists, it's an easy, quick drive to Georgetown or downtown and Georgetown can also be accessed by bike or on foot (although several miles). There are several fabulous restaurants on the block. There's a small market/deli, Starbucks, and other services in the same block too. The public transit is less favorable than, say, the heart of Dupont Circle, but that's reflected in the price.
The apartment is a very spacious studio, clean, and well furnished. The bed looked a bit lumpy, but turned out to be quite comfortable. I appreciated having a comfortable chair for relaxing and a table at which I could work. The space has wi-fi too.
The only drawbacks: The walls are pretty thin, so quiet neighbors who go to bed early are important. Fortunately, with Matthias' intervention, that was not an issue. And due to the slope of the site, the patio is a little below grade, although the other windows are first floor level. Nevertheless, it does have a bit of a subterranean and/or "extra cozy" feel.
Overall, for the price, this was a great find. I would happily send others here, particularly visiting students or others who might need a place for a bit of a longer stay (and needed the washer/dryer, place to cook, etc.) I didn't see the other apartments in the building, but given Matthias' high standard for hospitality and cleanliness, I would consider those too should I again need a place to stay in the Palisades.