Mandatory gala dinner fees may apply at Spain hotels. Guests should contact the hotel directly for more information. If you arrive outside reception opening hours, you can use the check-in machine. Please contact Sleep in Madrid in advance for the password. If you arrive after 14:00 to the hostel you will need your reservation number in order to enter the hostel. You will need to enter the last 6 digits of the reservation number on the keypad and wait for the green light. Once inside the hostel you will find an envelope with the keys to your room on the reception desk.