Let me start with positives. I've never had a bad (weak) drink at Kelly's, and I feel it's very reasonably priced. The only food I've tried was the mac and cheese, which was ok given how much it cost.
Kelly's has two major issues: cleanliness and service. The booths are covered in crumbs, regardless of the time of night, and the tables often need wiping. Mysterious sticky stains abound.
The service would be so-so if not for this crazy policy: let's say you sit at a table. No waiter has been paying attention to you, so you go to the bar to get a drink. Are you allowed to bring that drink back to your table? No, you have to drink it at the bar! It's a kind of catch-22.
For these reasons, I have to give a 2 star rating - there are better bars around.