Enjoyed our stay!
We had a room on the 23rd floor in the north tower with a great view of the ferries and space needle. It was fantastic! Since the Towers are round, you have a very wide open view. 
Room was spacious and very comfortable. Set up to have a very cosy view of the city scape.
The front desk was great and she did her best to get us a great room with a view. The concierge was very helpful, humorous and knew his stuff. Very helpful staff, among the best I have dealt with.
Very close to the metro, the monorail and all public transportation. Easy to enjoy the town. You can walk to Pikes Place Market (a must for visitors) and use public transportation to get anywhere else like the Space Needle and Pioneer Square and even the airport. You do not need a car! Which is good since the parking rates are absoultely confiscatory! If possible, park at the airport and ride the light rail in. It stops just a block and a half away.
We would have liked to use the room service since we had a great view. But with 18% service charge, $4.50 delivery and then the gratuity, out of the question for us on our budget. However, there are lots of restaurants (including a food court) nearby. There is also a Bartell's(sp?)Drug store across the street to get the basics.
Their "green " efforts confused us a bit. In our case, we thought it just meant they would not change the sheets, which was OK with us. But it turned out in our case they did not even come into the room to clean it or change towels. In other places we have been, you put the towels you wanted exchanged on the floor and put a note on the bed not to change it Then Housekeeping did its stuff. But apparantly not here.
Minibar costs were very high to me.In fact, if you even take out their stuff to put in yours, there is a $25 fee! Wow.
But none of the details detracts from it being a great place to stay in Seattle. We would recommend it to anyone. It is really very well located and give you first class service.