Westchester Square is that Tudor style apt complex off of lakeshore near hillcrest( behind the old Agudeth Jacob Synagogue)-really safe area. Probably 10 , maybe a tad more or so from campus and it is families for the most part.
For an independent senior living facility, stilwell retirement community behind Target can't be beat. It is primarily for retired educators, but open to the public. Best value in Waco, and as a former director of sales and marketing for two waco assisted livings, I know my stuff when it comes to senior living and Waco. They also serve three hot meals a day in a dining room environment so he will have some built-in new friends.
Good luck in your search. Hope I was of some help,