Fireplace Space

[PinkGin24]

We have recently moved into a property that had just the fireplace 'hole'left if that makes sense. We had the walls rendered and plastered but we beed to sort out the fireplace floor.

Currently this is just a really uneven concrete surface so first job is to flatten that out. What is best to do this with?

There is then a 2cm gap between the end of the concrete and the start of the laminate floor. How can we fill this?

We do 't intend to put any fire back in, we will probably just put hurrican lamps or similar in there, but has anyoen tiled the inaide of their fireplace floor? Anyone just using it as a feature "hole" what does your floor in it look like?

To level out the floor you could use a product like this:
www.diy.com/departments/u-can-u-can-floor-leveller-10-kg/1113325_BQ.prd

You can definitely tile inside the fireplace.
i.pinimg.com/originals/59/5a/db/595adbd71d482d4629aa7b0a260ff8af.jpg

Regarding the 2cm gap - would the tiles potentially cover this (depending on size of tile used)? You may have to pack the gap first to prevent the tiles cracking. Or use normal tiles inside the fireplace and after filling the gap use smaller border/mosaic type tiles to cover it up.
Or you could try a solid piece of stone to cover the whole bottom part of the fireplace. This could be pricey if it's an odd shape and has to be cut to fit. Like this:
techdirt.club/wp-content/uploads/2018/04/empty-fireplace-ideas-empty-fireplace-ideas-best-ideas-about-empty-fireplace-ideas-on-empty-fireplace-ideas-with-candles.jpg