Hi - I think it was 2pm, as check-out was midday.
I have a feeling it is officially 2pm as check-out was midday.
Technically 2:00pm (14:00) but we arrived around noon and they were able to accommodate us.
Officially 12pm but if you email them your arrival time you can book in before.
Get an answer from Petit Palace Posada del Peine staff and past guests.