Point East may also be another HOPA just south of Aventura, proper.
Send me an e-mail via my Trulia profile and I can research this more for you.
There are quite a few buildings in and around Aventura that are 55+ communities. It's a very broad question, like asking what condos are luxury buildings. I would suggest that you team up with a local real estate agent to assist you in your search. You can start by calling your local office and asking for an agent who specializes in this segment of the real estate market. That would be your best bet to find all of the buildings that are truly 55+ communities.
Best of luck!!!