For a cheap stay in Dubrovacko Primorje, we recommend these budget-friendly hotels: Villa Planika, Apartments with parking space Slano, Dubrovnik - 8540, Apartments by the sea Slano, Dubrovnik - 8599
If you want to stay close the airport:
Studio Antica, Apartment With a Private Swimming Pool, Apartment Bobo - stylish loft near Dubrovnik Airport, Joy4You