It’s gotten better over the years, but these free breakfasts are usually pretty unappealing. If they have protein (like peanut butter, a hard-boiled egg, or cheese), I’ll grab it, maybe make a sandwich, but if it’s just bad doughnuts or microwaveable danishes, I’ll pass. Coffee usually sucks.
Funny story: an old BF of mine is a sucker for free coffee, no matter how foul. I had to wait because he insisted on grabbing a cup on our way out of a motel near the airport in Chicago, even though we were headed out for a real breakfast; first thing, he spilled the coffee on his sweatshirt. Served him right!
I’ve only once been served hot food as part of a hotel/motel deal in the U.S. (though I am an extreme cheapskate when it comes to motels) – in Astoria, OR, at a restored elegant hotel, they gave us vouchers for breakfast at a nice place across the street; that was good. Now in England, on the other hand…! (I guess B&B’s don’t count in this question…)