This place is as advertised and is in a great location!
It is easily walkable to many attractions such as the Pikes Place and the Space needle.
Two things I would consider:
Their very strict check in policy which would make it hard for someone who comes in on a red eye because you are stuck with your bags until check in and same thing for check out.
The other thing is the cost. I think you can find a hotel for similar cost which would be nicer room and have additional amenities like luggage check and late checkout.
I am a loyalist airbnb customer so I didn’t even check hotels prior to booking but I did check after and found many in the same area that are similar cost.
Few other things: The wifi is not great and because it is a window AC it is a bit noisy. You also have to walk to the third floor.