Hallenbad Hiltrup is a decent small swimming pool. 2 Stainless steel basins, one for swimmers of 25 Meters length and one for children. They have one lane set aside for what they call "performance orientated swimmers" (and apparently you can be "performance orientated" AND slow at the same time) but the rest of the big basin is a free for all. A System that overall doesn´t work well in my experience, but when I was there the whole pool was quite empty so there was enough space for everyone.
There are also disco-balls and colored lights on the ceiling - so I reckon they are having a pool-parties there now and then.
For the Lockers you need a 1€ piece and the showers are separated for men and women.
Negatives? Too few hairdryers and those that are there are not height adjustable. So taller (or shorter) people than what they envisioned (1,70m is my guess) will have a hard time blow-drying their hair.
Overall a pretty functional, small & clean suburban swimming pool. read more