Lili is everything that the other reviewers have said it is; welcoming, beautiful, friendly, cheap and delicious. This place has become a sort of communal living room for us in Polish Hill; you come alone and you're guaranteed to run into friends. Rob is wonderful and has let me pay with quarters and has taken IOU's when I was really broke. In the warmer months, the front patio is a great place to hang out and read a book with your dog, maybe meet some new people. I've heard complaints about the coffee, but it's gotten muuuuch better and is consistently delicious now.
Seriously, go get lunch at Lili Coffee (I recommend the burrito or the tempeh reuben).