Mission Pool is an outdoor swimming pool inside the Mission Playground with limited times and access depending on season and budget. You can call ahead to check, but it is very difficult to get an answer from them, or stop by to check its posted schedule if in the neighborhood. It is $3 for adults and $0.50 for children.
Afterwards, you may want to taste some of the food offerings in the neighborhood depending on your budget and desires.
Phone: (415) 695-5002
Muni 14, 14L, 26, 33, 49