The place was pretty much exactly as described, it's small but very useable and has everything needed. The location is nice, quiet but with most everything you want within a short walk. I stayed for there for 11 nights traveling for work in West Lake Union and was either able to walk (~40min) or choose from 4 different bus routes.
The couch bed is not amazing but it's as expected and fine, likely less noticeable on shorter trips. The single burner stove is a little awkward and runs on fuel canisters so it may be more useful in warmer months to allow for opening windows to vent.
As mentioned in other people's comments, there is some noise that comes from the tenant upstairs but it wasn't too loud and stopped at night; I did not hear anything between 10pm-6am which worked perfectly for me.
All in all it was a great place and was exactly what I was expecting - if you're interested based in the description I would definitely recommend.