That lounge is very nice, nice view on the beach and one of these rare lounges where everything is free including alcohol.
If you are in high season (oct-Mar) it might be challenging but if they do not put in an executive level, during the checkin ask what level the lounge is and they will most likely give you access.
I have been there both as a Diamond and Gold and I have always gotten access to the lounge.
Good luck!