Upvote:2
99 times out of 100, when a hotel chain offers a Points + Cash booking option, the rate listed is listed in terms of Points and cash per night. Neither is a flat rate.
Thus, a 10 night stay would be 150,000 points + 300 dollars at that price. Since most hotel bookings aren't billed until check-in, many chains will allow you to make a reservation like this, even if you don't currently have sufficient points.