As others have noted, the desserts and prices are OK but the service is aloof and inexperienced. The overall impression is that they don't really care about customers. We were needlessly made to wait for a table and after much waiting without any information from the staff had to "seize" one that cleared up, otherwise we'd had to wait longer. The cashier messed up our bill.
However, this restaurant is the only place in Montreal at the moment that serves these kinds of desserts so they can afford to act as a monopoly and treat customers as a nuisance. Let's see how long this advantage lasts. The restaurant itself is very loud so try getting take out instead.