Having came here a few times, I have to say that this Demetres is "just okay".
Being famous for their crepes (and waffles), I usually order one of the specialty crepes. The crepes made here tastes a bit bland compared to the other Demetres I've been to (Courtney Park, AMC). So once you take a bite, it is usually just the taste of the other toppings + ice cream.
The cafe also tends to be very busy during weekends and fridays (as you would expect), so the service will tend to be a bit sloppy (sometimes they forget to refill your water, or that you wanted to pay).