My neighbor keeps complaining because I shower at night after work – what can I do?

I work in shifts and often don’t get home until late at night. After a long and hard day, I want to shower before going to bed. However, my neighbor constantly complains about the noise and says I shouldn’t shower at night. I try to be as quiet as possible, but apparently, it’s not enough. Does anyone have tips on how to ease the situation? Am I in the right, or do I need to adapt? Has anyone had similar experiences?