The Hallenbad in Friedrichshafen is the closest indoor swimming pool. In addition to lane swimming, you will find a water slide and a few diving platforms.
Tuesday: 12am to 7pm
Wednesday: 9am to 9pm (warm water day)
Thursday: 9am to 7pm
Friday: 12am to 9pm (warm water day)
Saturday: 10am to 7pm
Sunday: 9am to 5pm