Actually, the cave you saw is very near my hometown, it is not that bad. The ventilation in it is good, and currently we have modern household electrical appliances as well.

Lots of local people adopted all things that exists in normal buildings, such as TV cable, Internet access, cars parked their own in the yard, etc.

You can refer to photoes at http://www.tripadvisor.com/Hotel_Review-g528735-d1307902-Rev...