My cousin lives in a cave house in Spain. They are all very different and hers must be nearer to a cathedral cave than anything else. she bought it because it was the cheapest kind of home. She runs it as a B and B, having just 2 rooms to let out.WWebsite is cuevapedro.com if I remember correctly. She is also a good cook so does dinner for people as requested.Her house goes right through a hillside so has natural light from both sides. Cave houses are supposed to be warm in winter (she has a woodburner) and cool in summer.
I've just been looking at the website Sue. For a holiday with a difference it looks a great place to stay.
Indulgence therapies & cream teas - sounds good to me.