The sky is so clear and uninterrupted at night you get to see the stars you usually never see. It's so peaceful, you sleep so well and need I write anything about Italian food? Or drink?
If you want to clock out from the rat race, read a book, eat and drink to your hearts content then this place should be on your list!
Umbria is definitely not a poor man's Tuscany. Let the crowds go to the latter one, whilst you enjoy the same without the crowds in neighbouring Umbria.