I was moved to another hotel a few blocks away and notified a couple of days before my stay. After they moved me, I checked and realized it was a smaller room and a more expensive parking. So I paid much more than expected for a smaller room without any apology or refund. After ten calls, I still haven't received a refund, and was told they will get back to me tomorrow. Let's see.
Don't trust DoubleTree to honour your reservation or their managers to get back to you on your concerns