Wine from Croatia, Erdut Grasevina

For the first time ever I have tried a wine from Croatia. The producer is Erdut  and the grape is Grasevina also know as Welschriesling.  The vintage is 2013 and the ABV is 12,5. This wine feels like a dry sweet wine. Some grapefruit, apples and honey but not ripe apple but unripe apples. The aftertaste is not that good and there is something lacking in this wine. Could it be a bad bottle or maybe it should have been drunk over three years ago? I am not impressed.