The ONLY thing wrong with Crema is the scramble for seating. The coffee is as made by the goddess Vesta, and the viennoiserie is as made in, well, Vienna. The soup is comfort itself. The Earl Grey almond latte is insired, and the Earl Grey tea in it is actually several notches better than Twinings. The staff are absolutely charming and not at all ratty about the huge crowds. I love the introverted feel of it; tables mostly for one or two, no big noisy buzzy groups, but a big clean wooden well-lighted room. It is NOT an atomsphere at ALL like cafes in France or Vienna or Venice, but very American; the room is much too high for those places, and too bright, and there's no table linen. But that's just fine.
But they need and could probably cope with premises twice the size, at least in the cold months. I understand the idea; on the few occasions when I did score an actual table, I felt the gods had reached out and tapped my shoulder. But on the days when I didn't and had to either eat outside at an ambient temperature in the 30s or stand or perch next to some Macbookwielding dude, I felt cranky. If I lived in Cambridge I would get to know the busy times. As it was, I was twice bittelry disappointed, my disappointmoent proportionate to my adoration of the place. Go into that store next door, people! You know you want to.
Oh, and the wifi thing... you can pick up the Harvard wifi from the front tables. And I actually liked that you weren't automatically hooked into the world. Besides, if they had wifi too, then nobody would ever leave.