I couldn't ask for a better place.
First the location, walking distance (less than 5 minutes) to Space Needle, Museum of PoP, restaurants, grocery stores...within 20 minutes walking you can easily get to Pike Place Market, Great Wheel, docks and more.
Then you have the apartment it self. It's a huge apartment, well decorated and very clean. Furniture and appliances brand new and a delicious complimentary coffee.
Last but not least you have the hosts...these guys will do whatever they can to accommodate you and make your stay as comfortable and smooth as possible.
Just book it and you won't regret at all