had problems when I first started in, then neighbours moved out, no further problems ;-)
And basically if it reads in the "Hausordnung" then it really only means keep the noise level at a suitable level.
I took a very long drunken shower at 3am after Luzernerfest a couple weeks ago, I'm gonna get arrested?
Amateurs...
Shower noise is nice and innocent. There is a certain type of noise coming from some neighbors I used to have I could really live without. Some stuff cannot be unheard.
Not a single complaint, because more focus on church bells whine
Avoided to use the washing machine on Sunday, as thought from this forum, taboo, but it is not problem to our current neighbours.
We even used the washing machine after 10 pm (I had to), however not too often.
You just do it.
Swiss people are amazing in this regard. There are a metric ton of rules. Everything is regulated down to the most minute of details and it's - quite frankly - ridiculous occasionally. "Don't flush your toilet after ten"? Yeah, right... as if.
But the Swiss have realized this. They know that their general regulations are stupid, so everybody does it regardless, but they try to be subtle and sneaky about it. And they never talk about their illegal activities such as showering at night.
So here's what you do: You take a shower. You enjoy it. You're squeaky clean and smell nice. Success was had. But then, the next day, you meet Frau Müller from downstairs and she goes "I heard you take a shower last night at exactly 11.17pm."
A critical moment!
But worry not, there's a way out of this. It is crucial that you keep a straight face in this moment. It is - in fact - of the utmost importance, because this is serious business. You dared taking a shower. At night. On a weekday. Frau Müller didn't get her assured-by-some-obscure-law seven hours of sleep. She only had six hours and 47 minutes exactly. But you're prepared. "I'm sorry. Won't happen again", you say as sincerely as you can.
And then you take a shower again late at night. Repeat this procedure as often as needed. Frau Müller will complain, you will be clean, everyone will be happy.
There, I hope I've helped.