I measure swimming pool with my height and my imagination and my fear of death...(I used to be a very calm swimmer before a very tiny accident in water...)
I still like to swim time to time...maybe facing my fear time to time is also not a bad idea...
Hallenbad Heslach is a nice place...(the only swimming pool in Stuttgart which does not connect to a diving area in the end: which is too much/deep for me and my drama-head)...