Its not eastern Europe, Slovenia is in Schengen btw... you have Austria 20km from the airport, Italy 200km etc...
Their English is great, some older instructors do struggle a bit with pronunciation which does induce some laughs every now and then
but you can understand everything and everything is in English, except some forms which they forgot to translate, haha...
I really like the approach, they are small but the attitude is very proffesional and no bull
... so far
I just found out that their ceo is actually former CAA director.
No I'm not from Slovenia but yes I found a room in the city to be close to the airport.