I've booked 'extra' nights when I've arrived very early (i.e. booked the night before my arrival to ensure that I could get into my room at 7am) and just made sure to note my arrival time on the reservation. However, I'm thinking the opposite on an upcoming trip.

My flight leaves around midnight and it is worth it to me to pay for that night's hotel room so that I have access to the room and shower into the evening - I know that they'd store my bags, but I'd like the room and shower and I cannot get a late check out that late.

Is this doable? How do I deal with check out (since it would be the evening before I am due to check out)?