With the impending merger of US Airways and American, I'd speculate that the new combined airline will move to US' larger terminal and abandon American's older terminal. That means the recently renovated Admirals Club probably has only one more year of service.
Along the windows are the typical club seats that you'd find at any Admirals Club. The unique part of the renovation added a larger open space in the middle of the lounge along with a revamped bar area.
The club is upstairs over the terminal and provides a nice view and decent plane spotting of American's hangar and aircraft parked on the ground.
The lounge provides the standard Admirals Club fare of bagels in the morning and cookies the rest of the day. Food is for sale throughout the day, but tends to be of average tastiness as it's mostly premade or something that's heated on a panini press. The bar area was improved with unique design features including a number of old whiskeys on display in the glass and gold ornate wall.
Since American's Laguardia terminal is older with limited seating and dining options near the gates, the LGA Admirals Club is a nice oasis away from the crowds downstairs.