I've been getting burgers at Burger Joint (inside the Le Parker Meridien hotel) on and off for years and I just realized - I've never told you about it. Yikes.
It's usually mentioned alongside other burger favourites in the city, so if you haven't been here before, you kind of need to get on that. Once you walk into the hotel, you have to search (depending on what entrance you come in from) for a huge red curtain. It's behind this curtain that you'll follow a hallway that leads you to this burger haven.
It's cash only and definitely worth the trip.