I love Sugar Marmalade.
Their menu is delicious and there's a great variety of desserts. I would highly recommend their Taiwanese popcorn chicken for snacks, and my favourite dessert is probably their mango pancake.
The staff is friendly and they always do their best to seat you as soon as possible when it's busy. I notice that they all say goodbye when you walk out that door. I've been coming to Sugar quite often and it's one of my go-to places to eat when I'm eating with a friend. There has only been two or three incidents where it was moderately busy and our server forgot to give us our water (in one case) and didn't tend to our table after we had called (in another case).
Overall, it's a nice place to eat and the service isn't horrible.