Ima dosta lepih mesta

It would nice to know in advance of booking.

none

Thanks for the suggestion - you can run a search for "Peaceful" campsites here:
http://www.pitchup.com/search/caravans-for-hire/lodges/motorhomes/peaceful/tent-pitches/touring-pitches?q=

Clicking "Peaceful" in the left-hand margin of any search result will strip out any sites that haven't been categorised that way.

We don't yet have a "Lively" category but you could try "Student groups welcome" as a proxy?