The only place I felt comfortable being a woman of great age, by myself was FIDO'S. Fido's is large, two doors and they serve food, enjoyed the entertainment and I knew a few people that worked there, therefore I felt OK.
My rule of thumb is pick a bar that serves food, the wait person is more mindful of you, which keeps some of the bad element away.
I did walk alone from the Palace Casino and Fido's to my hotel the SunBreeze, w/o concern.
Best to walk the street IMHO rather than the beach, and I always had my trusty flashlight, for the dark spots.