Details: lost. I don’t want to get smoothness by paying with information. The luminance noise filter is usually not a good choice. My comparison is not pointless but important because denoising is a very sensible setting. Many smartphone images are destroyed by aggressive builtin algorithmic image “enhancing”.
@XavAL Thank you for your example! It was of course not my intention to create a “Lightroom look”, but I want to reduce noise that is there due to sensor’s limitations. I still prefer my profile to yours because the details in yours get “smoothed out” a bit too much. I can see it when loading your profile: A wave has gone through my image and taken some information with it 
I like the “true” luminance noise of an image to the degree where I cannot reduce it any more without loosing details. Probably I will soon understand more about wavelets and will find a better compromise between denoising and conserving information.
My profile: _DSC0986.NEF.pp3 (11.4 KB) It links to the neutral DNG profile @The_Squirrel_Mafia pointed to.