I needed a place to stay for a weekend around the San Francisco airport. After opening up the SPG app on my phone the Westin San Francisco airport popped up with a decent rate under $200 for a night there. I haven’t been to the Westin and decided to give it a shot. Just a few weeks ago I was staying at the Aloft right behind the Westin, which is as well an SPG property.
I booked with the SPG app on my phone the night before and when I checked the next morning, rates were already up again.