I did wind up staying here. While I am Platinum I did not really expect any real recognition as I was on Delta Vacation Package booking. They did recognize my status and upgrade me from their basic room into a larger king bed room that was very nice. I also got free breakfast and free internet. Breakfast was very nice and I really enjoyed eating under that dome, but I don't think I would pay the 35 Euros they want for breakfast.
Room was on the first floor which initially had me nervous but turned out to be great, it was easy to just quickly walk up to the room and they did have key card access to the hallways on the first floor. Room was in excellent shape and the staff was great. I had wanted to stay here and am glad I did. It's an elegant hotel, but not stuffy and I really enjoyed. GREAT location for visiting the museums of Madrid and pretty nice for the rest of the city.