Poco is not all things to all people. Foremost, it is not a restaurant. It is a wine bar.
Simple, small, elegant, local, and informal. Don't expect flash, pomp or circumstance... you'll be disappointed. Don't expect obsequious or fawning service either. Rather than entertain you, the staff tends to leave you alone in a romantic, candlelit setting to enjoy your date or company. If you're alone, they are conversational and helpful.
Bites tend to be generous, but none are a satisfying meal. Again, this is a wine bar and not a restaurant. Still, I would like to see a simple salad or soup offered with some of their bigger wines.
Finally, if you can't walk one block from Olive to Pine for an elegant glass of wine without thinking you've climbed Mount Everest, you probably should shuttle your big a$$ to the front door of Purple for another crowded, impersonal, corporate experience.