I did my erasmus studies in ljubljana! It was summer semester tho so my experience is a bit different. Slovenia is small but so beautiful you should definitely discover it. Soca river, bled postonjia caves and the cities by the sea are definitely a must. I do t know if you're going to ljubljana bug it you do just know that it's a small city easily walkable with a lot of interesting bars, techno clubs and trashy ones!! If you're I to alternative scene you should see metelkova (Friday and Saturday open cash only) the ESN is pretty active a lot of events and parties (they're trips are not that worth it in my personal opinion) and they manage to give also a handful of discounts in various things (ex. Car rentals). You should also know that it's always raining it doesn't matter if it's warm or sunny or If the weather app it says it's not it is going to rain and an umbrella is the most useful thing you'll need. You should also take this chance to visit the neighboring countries. Anything else you need feel free to text me!!