Mandarin Oriental Macau is a hotel that overlooks what man-made lake in Macau?
Mandarin Oriental Macau:  It overlooks the Outer Harbour and Nam Van Lake, immediately to the south of the Wynn Macau hotel, and is located near a jet boat terminal. Nam Van Lake: The Nam Van Lake (; Portuguese: "Lago Nam Van" ) is a man-made lake in Sé, Macau, China.
Nam Van Lake