My partner and I were here for an entire summer. The place is beautifully decorated and very homey, and has a great view on a sunny day. The location is super close to pretty much anything of note in Seattle (Seattle Center, Uptown, Capital Hill, etc.). There are many transit options as well, with many bus stations nearby and the Link light rail reachable either by foot or by bus. Downtown is a 30-minute walk or 15-minute bus ride.
In terms of downsides, the apartment turns out to be a bit smaller than what we were anticipating (though looking back, the photos are accurate). The host-provided Wi-Fi was also quite weak: while it's probably fine for a couple nights, we were there for a couple months and ended up paying for in-unit Internet ourselves ($50/month extra and super easy to set up). While the apartment faces Space Needle, it also faces a major highway, and could be a bit noisy at night (motorcycles and emergency vehicles, mostly).