The "Mill Valley" vanity that j222b posted is a great example of a custom-made reclaimed-wood vanity. I really love the look! I don't know of anyone in your neck of the woods who is manufacturing reclaimed wood vanities, so you might consider asking a local cabinetmaker for a quote. The simpler the style, the lower your cost will be.

I have a whole wall that I need to block off with some sort of door. I'm thinking that a bi-fold door would be awesome. However, my husband kind of wants a sliding door. I just think how cool it'd be to have a whole wall made up of a door that could easily be tucked away when needed. This would make outdoor barbecues a lot easier. It would sure save me from having to open the door every time. http://www.superiorwindows.com.au/content/Products/BifoldDoors.aspx 

I don't think you can go wrong with a large timber door. The colour should contrast with the granite nicely and will even help soften all the colder surfaces. Have you seen any doors you like? https://www.houzz.com.au/products/front-doors-prbr0-br~t_10816

Hmm looks vintage! That detail is beautiful. Could you email the old owner of the store?