Very hard. They really need to be paired with coffee. I suppose tea or hot chocolate might work, too, but they have to have a hot beverage to really permeate their inner layers. I tried a couple with cold milk and it just didn't work. I mean, flavor-wise it was fine, but the biscotti were still too hard.
Like Sonia, I think most people will be perfectly happy with how lemony these biscotti are. I, however, always want more lemon flavor—or in this case Meyer lemon flavor—in pretty much everything. Still, there's a respectable amount of lemon, which I appreciate. I can't tell whether the zig-zaggy icing is lemon flavored as well or if it's just sugary sweet. I suppose it's there more for the visuals than any actual flavor.
The miniature size is fun and convenient. They're still long enough to get pretty far down into your coffee mug, and their texture is just about perfect once they've sopped up a bunch of warm java—almost like a fresh-baked cookie, but wetter.