I need to start by saying that Kate's basement apartment is located in a really nice area of Seattle close to Green Lake, downtown, access to freeway, etc. so you won't be disappointed staying there. The area also felt safe walking my dog at 11pm (solo male traveler here).
The unit is described accurately and photos are representative of what you will find. Since I traveled by myself (plus my dog) I only used one of the bedrooms in the unit. The bes was comfortable, pillows galore and privacy from ourside courtesy of screen curtains.
The only thing I'd mention as slightly bit of an issue is the sometimes random noise coming from the host's family who live upstairs. probably not a biggie if you are out and about during the day but I did find it a little too loud at times. Otherwise a stellar experience.