Was there about 3 weeks ago and the lounge is still closed during the day. I went to the desk and asked about access to the lounge and explained all about spotting and the gentleman asked me to wait five minutes while he finished dealing with customers. He then escorted me to the 14th floor and opened the door to the banquet room which was nice but it is all behind tinted glass. I can only assume that the lounge is off limits to all but the general manager. I'd chat with her upon your check-in and set something up ahead of time as my belief is that special arrangements are needed to get the door unlocked for the lounge.
Course a phone call ahead of your visit would set you straight. I know a lot of cheaper places to stay at LAX
as I just had the Courtyard for $52 a night on price line. If you can't get lounge access then I'd stay somewhere else.
Lots of luck..