Karl and Arlene's place was neat and tidy, and very clean and welcoming. It was super hot during our stay (way hotter than normal) so it ended up being pretty uncomfortable in the rental. The AC unit that you could plug into the bedroom helped, but the rest of the apartment was toasty. I remain baffled why rentals in Seattle don't have ceiling fans.
There was also quite a bit of construction right across from the apartment, so it was very loud. It's a semi-walkable neighborhood, but being on Queen Anne Hill it is extremely hilly, so that is just something to note for the less active renters.
Overall our experience with the rental was good. I wasn't accustomed to meeting the renter upon arrival, so scheduling that made the check-in process a bit more difficult than normal. The instructions they gave could have easily been left for us, as other AirBNBers have done.
They are welcome hosts and the rental is sufficient, and pretty darn cute (in quasi mid-century mod style). I wouldn't hesitate to rent it again.