But beware of how you book. Searching for Pasadena hotels brought me to what looked like a Weston site, but actually was something called roomstays, about which I later read some bad reviews. The rate was good but not until final booking was it revealed that there was a fee. Westin also doesn't credit the stay with their Preferred Guest program.
The hotel is very comfortable, with an up-to-date and larger than usual guest room and Ventanas is the place for a generous and delicious breakfast with excellent customer service. Other restaurants and shopping are within walking distance.

The staff were very attentive, and helpful. Tina at the front desk and Oscar in concierge went out of their way to make sure things were right. I had to change rooms twice because there was a problem, but the staff cheerfully and quickly got me to a fantastic room with a beautiful mountain view on a top floor. I was there for a medical conference, and my birthday was the day after. I was out of town alone, and the staff knew it , so when I got back to my room, the staff had a arranged for a beautiful birthday cake to be there as a total surprise! Great service, the manager Benito Benitez not only emailed me to make sure I was comfortable , he also called the room personally. The outdoor patio is beautiful, the room service was always great, and on time and the bed was very comfortable. This hotel has a hospitable, very attentive staff. Even though the host hotel was sold out, it was a blessing in disguise because it was such great service. They will drive you anywhere within a 3 mile radius and they will come pick you up from shopping or the spa with only about a 5-10 minute wait, without charge. I will go back, especially because the manager cares, and the staff is so accommodating.

I work next to the Westin Hotel, and have breakfast and lunch at Ventanas at least 3x a week. The staff is very friendly and attentive, specifically, Norman and Francisco, who have always greeted me (and frankly, all their customers) with positive attitude. Norman and Francisco demonstrates a well balanced professional and personal courtesy to everyone that walks in at Ventanas, which makes for a positive experience. Their customer service skills represents the utmost professionalism that is expected of a hotel such as Westin.

We had breakfast several mornings in Ventanas, the restaurant at the Westin. Not only did we enjoy the food, but also interaction with staff members Norman and Diego. Both were kind and hospitable, while not being intrusive. I was pleased to meet Norman, a man who in casual conversation communicated a love for his wife and his enjoyment in being a daddy to his children. Both of these men were worth the price of admission. Their service was excellent, too.
Kudos to Westin for their staff.