The oldest hotel in the world has been operated by the same family for over 1,300 years, even catering to samurai.
Citation: https://www.atlasobscura.com/places/nishiyama-onsen-keiunkan?_kx=Ksjy4CYI2GHruXTPe_WySBK838PBdOEcvgZcUAoCnmM.UUnqkC