Get in touch! Contact info Thessaloniki +30 2310 260 077 sales@gassiholidays.gr 88 Mitropoleos str., 54622 Thessaloniki, Greece Athens +30 210 3220272 athens@gassiholidays.gr 3 Kapnikareas sq. & 53 Ermou str.,10563 Athens, Greece Name Email Phone number Message Send Thessaloniki Athens