For SOME RESERVATIONS ONLY you may be required to come to the AB Apartment Barcelona head office to collect your apartment keys (please see the Check-in and Check-out page for more information). AB Apartment Barcelona may have many new arrivals in the same day, some at the same time. Since we have hundreds of apartments all over the city, it is not possible to complete check-in at each individual property. However, our head office is centrally located and is very easy to reach by public transport or car. Check-in at an office is common practice for most agencies in Barcelona.