I have to admit, I was skeptical. To the uninitiated, sleeping in a cave sounds a bit like something has gone horribly wrong for you, but this place is beyond extraordinary.
Mostly illuminated by candlelight, the Sextantio Le Grotta della Civita is the very definition of old world charm. It was once a former monastery and the town of Matera is believed to be the oldest consistently-inhabited town in the world. The structure, as it were, is carved into the side of a cliff and only once did I wake from a nightmare about being trapped in a cave. Despite its rugged look, the accommodations are pure luxury, where the ancient stone floors have radiant heating and the wifi signal is sure and strong. Some electric ambient lighting exists, but the effect of the candlelight against the rough stone (and the in-room tub!) is pure romance. Each room has a private bathroom, but ours did not have a shower, just the tub that practically begged you to climb in.
This is a magical place and despite the fact that the doors look like they lead to a dungeon, you will never want to leave.