The accommodation is called "Shibata-sou(しばた荘)".
They are located in not boathouse area of Ine although they offer 2 meals and pick up service from down town of Ine.
Price: 10692JPY/person with 2 meals, they also offer no meal booking as well, although I personally recommend you to book with 2 meals.
Website available in English. http://shibata-sou.com/en/
Please book through the site.
Access: From Amanohashidate station or Miyazu station, take a bus bound for Ine or Kamanyu or Kyogamisaki and get off at Ine. From there they can pick you up(please tell them you need the pick up service when you make booking).