do not remove the existing dark grey curtains add full height off white sheer curtains to the interior side of the floor to ceiling windows the sheer curtains should be semi transparent with a denser more luxurious fabric that softly diffuses natural light while still providing some privacy they should not be completely see through through the windows show a close realistic view of vitosha mountain making it appear naturally just beyond the property with lush greenery and detailed mountain scenery preserve the existing architecture furniture lighting camera angle and overall design without changing anything else