They state they have a low price guarantee, but they do not. I booked a hotel room with them, then checked on the hotel website before my trip for directions, and saw that the room's standard cost is considerably less expensive than the price booking has. I wrote booking with the information. I received an answer stating the low price guarantee does not apply for reasons 1 (inform booking after checking in), 2 (lower price is due to reward points), and 3. Price advertised is not for same room, not for those dates, etc. I replied stating that neither 1,2, or 3 applied and that I would like them to honor the low price guarantee. I received another answer two days later with a screen shot that shows the price the same as booking's on the hotel's website. Only thing is, it was a screenshot from ANOTHER hotel and the price "list" was from 2014. I wrote them back again, and so far... nothing.
Update: received an email from booking offering me to reimburse the difference. Waiting for details...