Nice location - beer should be served dead-cold though and glasses shouldn't be given straight out of the washer - it's summer!
Quite new place on map of Zagreb and it is getting recognized very quickly, people love the vibe you get there.
Decent selection of gin & tonics, quiet even though it's right next to a major road, generally a cool (if a bit hipsterish) atmosphere. Prices a bit higher than Zagreb average.
It really is most unusual, but in a good way. It's the place with the glowing trees - can't miss it.
Most unusual garden is a only bar where you can drink your tea coffee or a beer in a treehouse