Dan's place was clean and we'll furnished. It was also super nice that the place had hair dryers, soap, shampoo, conditioner, and dish soap since those kinds of things are difficult to fly with.
The only downside to it was the location/area. It was fine for our group since we're all adults, but it was definitely not a touristy area or somewhere I'd really want to take my kids. Three out of the four nights we stayed there, we were woken up by neighbors yelling obscenities at each other in the street.
One tip if you do stay here is the DC streetcar. Even though the nearest metro stop is a mile away, the DC streetcar is a free service that will shuttle you to and from there, which is super handy if you have bags with you or don't want to walk at night. And there is a tracker online so you can see when the next car will be at your stop.
Overall, it was a decent stay. Plenty of comfortable beds for our group of 4, clean space, and thoughtful amenities. Just be aware that you're not going to be staying in a cute little historic area of DC if that's what you're going for.