Smallest hotel in the world

Punta Grande Hotel since 1992 is considered as the smallest hotel in the world. It is located on El Hierro (Island of Iron Island or Meridian), part of the Canary Islands, belonging to Spain island.
The building dates from 1884, used as customs in the previous century. Now there is a tiny 2-star hotel, with four doubles. No TV, no phones while the stack is the first in the world to be fully self-sufficient in electricity from a hydro-wind power ever since.