Always pay cash when the rate is that low. Save the points for the $700+/night rooms where you get better value. The last 85k’er I redeemed the room was going for like $990/night with taxes and fees. A few months ago I had a 2 night award stay booked at the Moscow RC and cancelled and refunded the points because the StR dropped under $300/night. Best to save the points for when they will help you most.