I might be too late in answering but will anyway. I think there are some rates that include breakfast. Ours did not...at least on our 1st 2 mornings. The 3rd morning we we were approached by a staff member who told us we were to have breakfast on them that morning. I'm not sure why. We actually didn't notice the restaurant being open our first 2 mornings anyway (Wed, Thurs) so we wondered if perhaps the on site restaurant only handled breakfast on weekends. I couldn't say. What we were served on Friday morning was fine - on part with other breakfasts during our stay. FYI - there is a to-die-for patisserie/coffee across the street and down 1/2 block!!
Get an answer from El Meson Hotel staff and past guests.