There are many different locations where you can exercise, one of those locations being Circle Fit. This location is open 24/7, meaning you can exercise there whenever you want. It also takes roughly 10 minutes to walk there. They also offer you a free 4 weeks when buying the casual subscription.
The casual subscription costs €42,50 per 4 weeks.

A different exercise location is Basic-Fit. There the most expensive subscription is €34,99 per 4 weeks. It is roughly 10 minutes of walking to reach that location.