The apartment is clean and comfortable, within easy walk to the light rail station (this takes you pretty much wherever you'd like to go; Space Needle requires an additional pass on a different train in order to get there, but it's all very easy).
The only downside is that there is no television, but if you're like us, you're out and about most of the time anyway, so this is a very minor negative (we just like to have it on for a bit before going to sleep). There are plenty of towels and bedding, and the hosts are excellent at responding to questions. We were quite comfortable and very happy with this place!