We checked in to the Star Alliance Lounge in Los Angeles Airport while travelling through Los Angeles with SWISS. We also checked out the First Class lounge which is attached to the Business Class Lounge. You can read more about that here.
The LAX Star Alliance Business Class Lounge is a very large, with multiple zones throughout the lounge. The lounge is obviously very popular being the main lounge for Star Alliance passengers flying out to Europe, so whilst the lounge felt busy and with a lot going on, the large size and different sections meant it certainly didn't feel crowded.
The seating in the lounge includes dining and lounging options along with a section that overlooks the terminal below.