It's a rink. It's outdoors. It's well maintained. Rentals are cheap and there is plenty of seating for changing footwear. Coin-op lockers are close at hand and so are a few places to get warm beverages.
Warning: It can be VERY windy here since it's outdoors and is in plain view of the lake.
Also it can get super busy during weekends.
Go on a weekday, mid-day! Then it's nearly empty and the ice is perfect.