Hire a designer. Designing is more than pretty finishes. You have to draw out a floor plan, elevatiins, electrical locations, material choice specifications that meet ANSI and TCNA specifications. Plumbing configurations that meet local regulations and specific use needs. There’s a lot that has to be researched and documented. Its months of DIY work to do it correctly. Or, hire a designer.

For instance, that vanity is designed to be freestanding, with open space on both sides. It isn’t a suitable choice to go between walls in an alcove installation. It will also be a pain to keep the diet, dust, and cat toys, out from underneath.

thanks for your suggestions. We are basically replacing the existing old oak vanity with this grey new vanity. I need advice on floor tile color to go with the light grey vanity. No need to touch electrical/change plumbing.

Congratulations, you have a nice vanity.

For your bathroom floor tile I would design your bathroom I will use matte black tiles. Because matte black most suitable tiles for this kind of bathroom design.

Not a pro, but I am going to disagree with one. Unless you sweep or vacuum often, don't think about a black floor in a bathroom. It is a place where dead skin cells are quite numerous from donning and doffing clothing. Then there are powders and sprays and toilet paper dust from tearing off sheets. All make for a lot of dust.

You are right. Thank you for your kind suggestions I have already decided to use white/marble tile floor