If you're in Australia try gumtree.com.au. People give them away.

I love it, and are considering this myself which is why I can offer an insight to installation. Yours is luckily freestanding, however I would install this central to the long part of your L and enclose it within cabinetry, actually yours is Likely to just be faced with fake doors and no carcass behind, still a place to utilize storing buckets or baskets, even laundry powder, just not a standard cupboard. I would then actually install a stone benchtop making this technically undermount trough. You would still have the practical size and aesthetic impact this concrete relic has to contribute. Only, with the bench top area to make it a useable space.

Hey L thanks for the comment I want to do something on the wall next to stairs where the switch is Those mirrors are for this wall Actually when I enter my house I see only 2 things one is this wall and the other straight at the back where the dining is This entry wall is 1 m wide...thinking to put these on that wall but they would look very white? Attaching my dining room photo

Good luck with the decisions! http://www.auraavenue.com.au does a large collection of wall art prints and posters, another great way to add colour, warmth and coziness to the ambience.