If you like to go ice skating, then this is the place to go. The stadion is opened from September till April, 7 days a week. On weekends there's "disco ice-skating" from 7pm onwards.
The entry fee is 3.50EUR for kids and 4EUR for adults at the moment. In the evenings and on weekends it's more expensive.
Equipment: You can either bring your own ice-skating shoes or borrow some for 4EUR there (you'll have to bring your ID then though!)