Marble is a very soft stone and requires some expertise to refinish. My only recommendation is to NEVER use a steam cleaner on your floors! It will remove all sheen and then you'll definitely need to have them professionally finished and sealed to protect them.

Hello Abinash, Correct me if I am wrong in my guess that you liked the basin so much that this entire unit was build around it :) that too in the centre of the room. Jokes apart, the base cabinet doesn't provide a few inches gaps to the user for keeping the foot comfortably while using a hand wash. Have you considered the water proofing and maintenance of this unit as what it appears it is wood with laminated top as of now. Do you have a floor plan, as it is a surprising positioning of a hand wash. Thanks, Nitin CORNERSTONE DESIGNS Bangalore

Hello there, You could scoop them out with a flat trowel and scrap cement backing with that as well. But it won't be much of a success and you will lose around 30-40 %. You could DIY broken tiles mosaics as an art ; frame and fix it on the wall itself with an appropriate glue. Or search for other DIYs on youtube. You could replace them with decals as described @cornerstone studio , but there's a catch ; high heat areas could deform and de-glue the decals as well. There are many projects possible with broken tile mosaic. Just search and follow an easy one. Regards, Aurum Ideas and Spaces Bhubaneswar

Greetings from Aura you have two options here go for indirect wall lights or wall lamps direct pendent lighting from slab point would also look good many ceiling lights options available suitable for no False Ceiling wall lights are always better it creates ambience.