Before Sunday's massacre, Las Vegas shooter Stephen Paddock stayed in the Vista Suite of the Mandalay Bay hotel. The suite boasts 1,700 square feet of space with a wrap-around view overlooking the Vegas strip. The 64-year-old Paddock stayed on the 32nd floor of the hotel. The Mandalay Bay has 3,000 rooms, and it's one of the most lavish hotels in Las Vegas.