I checked in the hotel, and on the card it was marked "with breakfast included" with an X. So obviously, I thought breakfast was included. I travel so much for work that I never remember if I have asked for it or not, and I get told when I arrive. So I went for breakfast and they told me it wasn't included, and I had to pay an additional 15€ for a croissant and one piece of bacon. I complained that it was normal to assume that breakfast was included, but they insisted I had to pay. I talked to the reception, and they insisted too. Oh well.