As it turns out both the Ws we tried in the last 12 months were wonderful-- The W Austin and the W Verbier. We definitely would stay at both properties again.
Although we are visiting Barcelona and Madrid next March we opted for different hotels (Hotel Arts and Palace in Madrid).
We probably will have a drink in the W bars at least and check them out.
We are going to stay at the W Seattle in October. We had a very nice stay last time after the renovation.