Unfortunately, discussing "safety" of an area may be a very fine line to cross when it comes to Fair Housing Laws.
I always guide my clients to miamidade.gov for more information and make sure to visit local police sites as well to get information.... more
Check out the link posted by tSara Yap. I would also say to take a look at Bay Harbor Islands. Home prices are high, but the condo market is great and many condos have great water views. Bay Habor has their own Police force, A rated elem. school and has a great community feel.