Ambiguous Hostel

The Ambiguous Hostel is a treasure in. It is a maroon ocarina with two engravements on the mouthpiece: a calligraphic writing that reads "Tlozoot" and a serif letter "AC", the latter closer to the windway.

Collecting the treasure
As with the other treasures found in the Serene Shores's northwestern section, you cannot access this treasure without first delving through the Engulfed Castle. Once you do, this treasure can be found to the north of the aforementioned cave's exit, sitting atop a ledge. It is low enough to be reached by most Pikmin or be knocked down with a rush from Oatchi. The Whiptongue Bulborb nearby should be defeated first.

Trivia

 * The engraving on this treasure reads "Tlozoot", a reference to The Legend of Zelda: Ocarina of Time. The "AC" engraving below stands for alto C, which is the same pitch used by the eponymous Ocarina of Time.