Booking is also pretty scummy. There was a blog post a few years ago from a hotel that always showed up as sold out, even it had plenty empty rooms. In the end it was a “feature” where hotels could “promote” their business so it would show up first, but the competition would also be listed as unavailable to force visitors into the promoted business. The other thing is that booking will show “only one room left” to pressure you into booking right now, but what ot actually means is that a hotel might only allocate 20 of 100 rooms to booking, and still has 81 free rooms if you call them directly.