You are welcome with your UAV in Slovakia.
Maximum take-off weight: Not above 20 kilo
Maximum hight: 100 meters / 328 ft.
Maximum horizontal distance: 1 km 0.6 mi and keep visual contact with the UAV
Insurance: Liability insurance obligated
Distance Airports / Heliports: 5 km / 3.18 mi.
Night flights: Prohibited
Prohibited: Not within 50 meters of people, ships, vehicles, roads, shipping lanes, ski area.
Useful link: Civil Aviation Division Transportation Office (CAD)
Contact information: firstname.lastname@example.org / +421 (02) 48777548