A1 is a regular Airport Shuttle Bus which connects Airport Nikola Tesla (Hикола Tесла) with Slavija Square in Belgrade.You will catch the bus in front of the airport main entrance and exit at the stop at main Belgrade railway station.A1 bus runs every 20 min. The price of the ticket is 300 rsd and you can buy it from the driver. Our hotel is 5-7 min walking distance from this stop. Please, use this link to see time schedule for this bus line.http://www.busevi.com/red-voznje/details/261-linija-a1-trg-slavija-aerodrom-qnikola-teslaq If you need any other assistance we are at your disposal.Kind regards,Milica Đoković,Receptionist