1. Nisiyama Onsen Keiunkan, Japan
Since 705
What is it in the Japanese culture that keeps the old tradition much longer than others? Well, one of the things certainly is consciousness about long lasting quality, which puts them in the first and the second place, at least in the domain of the oldest hotels in the world that still exist. Like Hoshi Ryokan, this hotel was also built around hot spring and run by the same family for all this time! Keeping the tradition in old looks, it only has 37 rooms, and a night costs around $440.
