I know someone who lived in a converted office in FiDi. The building itself was fine, it seemed like any other luxury tower in the area, and the building's exterior was cool, but the hallways and floorplans were really weird because they needed to be long and snake around other stuff.

https://www.renttwentyexchange.com/apartments/ny/new-york/availability

This building was built in the 1930s, I bet living in an office building made after they all became glass boxes would be a lot worse.

I had friends that lived at 200 water street, which was a conversion. There's definitely some quirks since the building has windows going around the entire outside so walls get put right up to the glass. You can kind of see it in the bathroom pickutet in this listing.

https://rockrose.com/building/200-water-street/

Overall it's not too bad and you only really notice it when it gets pointed out to you.

>Has anyone come across an apartment listing of a recently converted office space? I'd be curious to see the final product.

You end up with stuff like this:

https://streeteasy.com/building/downtown-by-philippe-starck/2312

Yup, that's a 1,300 sqft studio; not legally a one bedroom because the "bedroom" doesn't have a window.

No, but I imagine they will be unaffordable for most people just like every other new apartment in this city