The Croissant Tree seems to be a bit hit-or-miss for me.
First, they've got a huge (almost too big) selection of food. I couldn't tell where to begin when faced with the decision of what to order.
Second, I've been here twice, and the first time the food quality was amazing and fresh. The potatoes (fries) were crispy and hot. The second time, I could tell the potatoes had been re-heated, they were lukewarm, and were almost grey in colour.
Third, the coffee selection is great! I'm not sure if it's bottomless coffee, but I was impressed with the selection.
Overall, I would say try it out and see what you think. I really enjoy the eggs benedict, croissants, and the coffee!