I agree that this piece would make a great focal point. If you would like, you can find a cream or white tile that has a vein of green though it. many beautiful options out there! I wouldnt break the bank as this is a stand out vanity!

Floors would be lovely in a patterned marble.

Here are pics from a lovely bath that could be an inspiration.

36" is tall. are you doing vessel sinks? are you using a stone top or just sealing that one? either one will make washing your face a little difficult if you are shorter than 5'8" or so. It's a beautiful piece. I would do a stone top of some sort and drop a sink in the middle. Use the same stone to come up the wall for the splash about 10" and do a wall mounted faucet, like the pictures above. The depth is fine. mine is 24" and I found a 8 1/2" spout. you could have a standard spout and it would fit perfectly.

Yeah, I was also going to say marble top and undermount sink in the middle -- that way, you keep the drawers and cupboards on the sides, as well as some amount of storage under the sink in the middle. You could conceivably have two sinks (can't tell how your current plumbing runs), but they'd have to be pretty small, and you'd lost most of the storage value of the piece, I think. White or cream marble and sinks would be really pretty, though, and maybe dark faucets to match the hardware on the piece. Then any coordinating flooring, whether tile or marble or whatever...

Here are a few photos that might help you visualize/decide:

Hillsborough Residence · More Info

Master Bathroom · More Info

Donner Pass - Whole House Remodel · More Info

Fantastic Bathrooms · More Info

Lakeside Farmhouse · More Info

French Inspired Farm House · More Info

Walnut Creek Farmhouse · More Info

Eclectic Modern Tudor Bath · More Info

bathroom · More Info

Small tiles will reinforce the vintage feel of the piece, or any larger tile or, say, herringbone will give it a more modern twist.