You can use natural stone like marble for floor but do not use granite for floor at all as it is very slippery when wet. As for tiles do not go for glazed vitrified tiles for the floor for the same reason. ( floor becomes slippery once wet and may cause mishap) Go for ceramic anti skid tiles that are specially meant for bathroom floor. For wall tiles you can use whatever you like and then decide over the matching anti skid floor tile/ marble. Double charged vitrified tiles are usually used for flooring in rest of the house.

Your own personal color preference followed by Italian Marble Look, Marble Look, Dark and Light Colour Combo... Go for 4' x 6'... Double Charged, Offwhite, Light Brown (RAK, Johnson, Kajaria make)

Hi AK, Go for a lighter shade of tiles to bring out more light. -Thanks, -Neelam -Lines and Profile

Hi Shibu, I would say that you should go for same tiles throughout the living room, regardless of raised floor. It would ensure continuity as well give the sense of bigger place. -Thanks, -Neelam -Lines and Profile