Hōshi Ryokan
Komatsu, Japan
Hōshi is a ryokan (Japanese traditional inn) founded in 718 in Ishikawa Prefecture, Japan. It has been owned and managed by the Hoshi family for forty-six generations and was thought to be the oldest operating hotel in the world until Nishiyama Onsen Keiunkan, founded in 705, claimed that title. It is located in Awazu Onsen, Komatsu, Ishikawa. However, it remains the record-holder of the world's oldest, continually-run family business.
Hotel data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).