I was there a year ago - quite pleasant.
Full service bar, mixed drinks, beer, wine, juice, etc.
Nice sandwiches available, lots of snacks, fruit, etc.
Nice view of airport activities
Lots of nooks and crannies for reading/snoozing
Good selection of newspapers and magazines.
Business desks with good lighting and power, etc.
I'm not sure about showers, but probably.
As an aside, I was travelling CPT ATL in Y on SAA with 90 mins to kill before boarding. I wandered by the F/C lounge and asked the SAA hostess if she knew where I could find a power outlet 'in the main terminal waiting area' as I wanted to do some work on my notebook but the battery was drained.
She said "Why not just come in here?" to which I replied I was travelling Y.
She invited me in anyways -- VERY nice people in SA.