Every bit as nice as the listing and other reviews suggest- but beware the 6:10am train!

The location, living space, furnishings, and amenities are indeed every bit as good as the listing and other reviews make them out to be. The place feels premium and new. Our family of four was perfectly comfortable with the grown-ups in the plush master bedroom and the kids on the sleeper sofa. Adam has hosting down pat, with the provided towels/linens, toiletries, and metro cards making packing/logistics a breeze. Plenty of hot water with good water pressure in the shower, and having a washer/dryer is great should you need it. We did not have to contact Adam for anything during our stay, as his write-up of instructions and tips is very through. Between the walkability the location provides and the metro being two blocks away, our car sat unneeded for the entire duration of our stay. Be sure to request a parking pass from Adam as street parking requires one.
Only two things potentially endanger your stay being perfect, and both are noise related. One is the aforementioned train line that runs directly behind the unit. The trains often blow their horn to warn of their emergence from the tunnel, and Amtrak trains have a loud bell that rings as they pass, fairly regularly starting at 6:10am during the week (less on weekends). If you are a light sleeper, consider ear plugs (I should note that the kids in the front room slept through the train horns undisturbed). Second is that this is the upstairs of a home that has been converted into two units. If the people in the bottom unit are being rowdy, you will hear them. Fortunately this wasn't a problem for us as the downstairs folks seemed to turn in early, and hopefully our kids stomping around wasn't a disturbance for them!
Again these relatively minor quibbles were easily overshadowed by all the positives of the location, quality of the accommodations, and professionalism of the host. Hence our stay in Adam's upstairs unit earns a solid five stars.