Its a newer building. maybe few years old. The location is in a really boonie quiet place. If you aren't specifically looking for an area at Jeju island, from experience it is better to get a place at seowgipo or near jeju city.
Everything was ok, the staff is friendly, but they don't provide drinking water.
Not even 2 bottles per day where we noticed this was the norm for any korean hotels/pension and no kleenex / tissue paper for the customers.