You are welcome with your UAV in Romenia, but you need a permit to fly here with a UAV.
Maximum take-off weight: Above 500 grams, UAVs must be registered
Maximum hight: 300 meters / 984 ft.
Maximum horizontal distance: Always keep visual contact with the UAV
Insurance: Obligated for UAVs above 20 kilo
Distance Airports / Heliports: 15 km / 9.5 mi.
Night flights: Prohibited
Prohibited: Not in Nature Parks like "Danube Delta”, you must have a commercial permit to fly there
Useful link: Romania Civil Aviation Authority (AACR)
Contact information: firstname.lastname@example.org / +40 21 20 81 508
Permit: Application form.