We booked this place months in advance to stay for a total duration of two weeks.
When we arrived to the place we were welcomed by a weird smell, TONS of spiders (mostly very small ones, but also the big black ones), dust, hairs, stains on all the tables and desks, and stains on the walls. In our perception those were mold, the host said it was most likely mildew (i honestly dont understand the difference), but nonetheless we were not comfortable with that situation as we were concerned for possible effects on our health. This was the case in the living room as well in the bedroom right next to the bed.
We informed the host about the circumstances and while they reacted to the cleanliness issues immediately, they seemed to try to avoid the "mildew-issue" and only responded after we asked several times.
To be fair, on the next day they sent someone to take care of the "mildew-issue" with a so called ozone-cleaning, but they were most likely not able to also offer cleaning on that day. On the question whether they are able to reimburse as in someway in regards of the cleaning fees and the inconviences, as they expected us to vacant the apartment for a minimum of 5 hours, we were only told "not my call to make".
We got in touch with airbnb directly and were able to cancel the reservation completely. When we went back to collect our luggage someone was there to take care of the stains on the wall. From what we have witnessed, he only painted over the stains. Not sure if that is the long-term way to go, but that is not my call to make ;) .
While they answer you guite fast on your messages, the content is not as helpful, as they are trying to avoid most of the questions, at least that was our experience.
If you want to make a trip to Washington without stress and in a clean apartment, I would not recommend this place for you.