Gujo Hachiman is surrounded by majestic mountains and has clear streams. Nearly 100-year-old old folk houses, which have been designated as an important traditional building group, are lined up. "THE OAK GUJO", which is located in an alley from the main street of Gujo Hachiman, A 100-year-old traditional house that used to run a small restaurant has been renovated into a hotel that can only be rented to one group per day. Leaving the structure such as beams, columns, and stairs, we have added a new breath while making use of the vestiges of those days. Somewhere nostalgic, but a new space. In addition, our hotel utilizes IoT and digital tools to provide a private space of an unmanned hotel where no staff resides.