Each of the following conditions apply to a number of European countries but I believe that only one country satisfies all of them. Can you guess or work out which country that is? In the event that there were to be more than one, you have to get the country I've chosen! Good luck.
A European country
1 ... that start with a consonant
2 ... that is not in the EU
3 ... with a maximum elevation of under 500 meters
4 ... whose name contains the letter ‘D’