I am arriving at Granada airport at XX time. When can I enter the accomodation?
Generally speaking if nobody was in you room/apartment the night before you can enter at anytime. If there was someone in you room the night before, the people in it have a right to be there until 12 noon, then it has to be cleaned. Apartments generally don’t have a place where you can leave your stuff so you may have to wait around a bit having a coffee on a teraza or something.