I stayed at the Hotel Barceló Nervion in Bilb(a)o a couple of years back. Quite a nice hotel, even if the room I had was a little pokey. Anyway, I had a good rate, advertised as €40 (breakfast €10). Normal stuff, I thought, breakfast is normally extra on rates like that.
But no, the breakfast charge was compulsory, whether you took it or not.
I was going to kick up a fuss, but was early checking out, and really fancied something to eat...