Jerome Patrick Shannon II
Google
Service is ALWAYS slow. I honestly have no idea why, there are some nights when you will be one of four or five tables and you still end up waiting. That complaint withstanding, this is a great restaurant.
The Rookery has a great vibe inside, the decor is awesome and well thought out. The patio is also a wonderful place to people watch and enjoy the sliver of nice weather Chicago offers each year.
Their cheeseburger is crazy good, make sure you ask for it medium well though, otherwise it may be undercooked. On our most recent visit, the burger came out not done enough and although we hate sending stuff back we had to on this occasion.
The server was awesome, despite the slow service, as he apologized for the burger, had a completely new one cooked to order (fries too!) took it off the bill, and apologized again.
That's how you secure a potential return customer.