Answer:
Sleeping during the day, I hide away. Watchful through the night, I open at dawn's light. But only for the briefest time, do I shine. And then I hide away. And sleep through the day.
Who lives in a house with one bedroom, 50 hallways, and ghosts lurking everywhere?
A certain wizard resided in a city made from this gemstone.
You can spin, wheel and twist. But this thing can turn without moving.
Being able to interpret the letters on this screen proves that you have this quality.
What covers its face with its hands, speaks no language, yet most known what it's saying?