Adding cabinets in the living room not only increase the storage for your shoes and stuff but also can divide the space into a specific size of your choice and create yourself a foyer area.
For the master bedroom, if both the walls and floors were covered in marble, the whole interior might end up looking too stark and cold. However, by just choosing one, you have the ability to tie just a touch of classical feel into the space while tying it in with more modern materials. Think about adding marble to the bedroom wardrobe. Use marble as an alternative.