As far as I’m concerned- 47-13 and up is packed with pple until late at night.
60th is already more out of the neighborhood.
Boro park on shabbos is full of yidden and is beautiful to stroll through at any hour.
Near rachmistrivke is definitely a great neighborhood as it is VERY JEWISH and in the heart of boro park.
In any case, we’re in galus and not safe anywhere. Only hashem can watch us whether its in BP or in the Bronx.
Good shabbos and keep safe!!