$500/ 2 people for Friday and Saturday nights. ($750/3 person room, $1000/4 person room...you get it).
Whatever is easier for you! You will most likely have a layover if flying directly into Florence. You can also fly directly to Rome or Milan and take a train (1 and 2 hour train rides, respectively).
Check out our To-Do section! It includes a link of activities at the Villa. Call ahead to the villa to book them for Friday/Saturday!