Robert
Google
This is one of the most beautiful trails on Sljeme, with very few steep parts and beautiful sightseeing and picture taking opportunities, as well as plenty of rest stops.
Make sure you wear comfortable hiking clothes, mosquito repellent might come handy, water, a towel and spare clothes if you sweat a lot, as you'll have the opportunity to change out of your wet clothes in the toilets at the top (if you have coffee or something to eat).