Is Cinc Sentits open for lunch on Saturdays?
I didn't notice any page that says M-F. I'm pretty sure that it's open on Saturdays for both lunch and dinner. Just now, I had a look at the upcoming reservations calendar and Saturdays are NOT highlighted at all. I think that means that Saturday is fully booked.
If you want to make sure, you can always email them and ask. The chef and his sister used to live in Canada and speak fluent English. Their team responds quickly to emails.