it's worth the travel
Why locals love it
At Japarto's they offer the best ice cream on waffels I have tasted in Tallinn so far. You can choose what kind of waffel, ice cream and toppings you like - and all that for a decent price. If you don't like deciding yourself, you can just pick a offer from the fixed menu.
Why you should visit it
It is only a tiny kiosk at a bus stop in Mustamäe - but don't under estimate it. They offer really tasty ice cream on waffels - enough to count as a full meal.
And you can just grab it and walk over to one of the nearby parks to enjoy it.
You can compose your food yourself. They put ingredients in the waffel dough as well such as chocolate, raisins, berries,...