I booked a hotel on C1 travel portal to use up the $300 travel credit. On the portal, the hotel I booked says "Free Breakfast". However, when I got to the hotel, I was told the rate that I had booked was "Room Only". The gentleman even turned his monitor around to show me that was what on his screen.
I checked on Expedia and I could see that for the property I was staying at, breakfast does indeed cost extra.
It was a quick overnight stay for me before I head out to the airport, so in this case, no big deal, I didn't really have time to have breakfast at the hotel before I head out anyway. But for those of you who are counting on the free breakfast C1 portal shows, beware.
The image on the left is what I see on C1 travel portal: Note where it says "Free Breakfast".
The image on the right is what I see when I try to book the same hotel on Expedia's site. Note that Breakfast costs an extra $24.