[loomster]

Hi Nic,
have you thought of joining one of the city's swimming clubs? I was training with Wiking Kiel (water polo), but I know that they have master's training. That would at least be a starting point. And if you are a student, then there are some more training sessions throughout the day (but that might be above your level). While I was learning for my finals, I was doing a lot of work-outs two-ish. Then there is less traffic and only sports swimmers/triathletes.