3. Go shopping or enjoy seafood at the port of Namal
Another great option for family relaxation. In the port of Namal there are restaurants, shops, a wonderful carousel, many playgrounds and, again, a place for cycling, rollerblading, etc. Namal is located in the very north part of the city, next to the park of Arkon, which, by the way, is also a great place for a relaxing on Saturday.
If you are interested in grocery stores, then look for Tiv Tam (English name "In the city") or Am: Pm. They are open 24/7 and you can find everything to survive the Shabbat there.