The apartment was very clean and a bit hidden away (in a good way), so I felt like I had a hidden nook in the city to hide away in at the end of a day well spent in Seattle. I was in a group of 4 (2 couples), and we comfortably slept on the bed and pull-out couch. (There's also an air mattress and a second couch that we didn't sleep on, so the space should work for any group of 4.)
There were plenty of towels, the wifi worked just fine, and there's even a fridge and microwave in case you bring back leftovers. We had a great stay.