littletank

This is a lovely picture for black and white because it has plenty of detail. But the white of the wall seems a bit massive as if there is not any detail anymore. Is the original colour version also lacking detail there?

Other than that there is a nice tonal range in all those ornaments.

Indeed, the original photo tells much more than one could ever possibly tell in his own words.
On the colour version there is still some detail on the pink front wall or plaster work although it is subtle. I think it would pay to try to preserve a bit of it in the monochrome version. In my opinion it will help to break the large white area somewhat. Perhaps slightly turning down contrast without losing the white might work.
By the way, the colour version has a value of its own. The pink and blue colours work nicely together.

At least some detail can be seen now. And the reduced brightness makes the wall less intrusive so that the eyes keep looking at the detailed ornaments and statues. I would not reduce the brightness any further because that would make the image too flat. This is just enough. Well done!