This is soooo what my dream bedroom would be like. The stone walls, the neutrals and greys, the low bed, and of course: The HORSE! Dress it up with Rainbow Ekkat rug in black and grey tones from the Karmic Hues rug collection.
strong materials, clean lines. for the area behind the desk, it may work to stagger something like the lattice w/ the stone in order to create side entrances to the concierge/security storage area w/o the visitor getting a direct view into that back room.