I think the only countertops to be wary of using would be marble or tile with white grouting. Granite, quartz, Corian, or even formica should not give you any trouble with staining.

I think the marble naysayers have jumped on the bandwagon without really living with the stone. I have statuary in my bathrooms and love it. Most stains can be removed with a simple baking soda and water poultice. Acid etching is harder to deal with since it removes the polished surface, but its part of having a living stone in your home. If it becomes too bad, you can have it repolished. With a darker stone, you won't have as many issues as a white marble. In order to really know if you can live with it, I suggest you get a small sample of the stone and do some tests. Here is an example. http://www.dohiy.com/2013/04/21/marble-countertops-the-post-acid-test/ Please note that she used bleach and oxyclean to clean the stone after her test. Stay away from both since they can etch the stone just as much as an acidic food. Instead, clean with a ph neutral cleaner like isopropyl alcohol (rubbing alcohol), and for heavy stains, the baking soda poultice mentioned above. You have to remember that marble has been used for centuries as flooring, table tops, countertops, etc. throughout the world and most of these installations are still here and aren't stained and etched to the point that it has been ripped out and replaced. Just think about all of he luxury hotels in Europe and how many times they have been exposed to Hangover type guests without any damage.

Please post the image of the kitchen...

In that case , wall hung cabinet would be able to support the slab and sink. Is there a reason you want it it to be wall hung cabinet. You have made safe skirting space and even a floor mounted cabinet should be fine here. Regarding material, for the carcass you can opt for granite vertical slabs and BWP ply shutters for floor mounted one. But if you prefer a wall hung cabinet then a BWP ply carcass sould be good enough. The wall groove should be cut only on the longer side. Thanks, Nitin Cornerstone Designs, Bangalore