The Hotel Lobby's Secret

The Hotel Lobby's Secret is the second episode of Sirena Beach in Super Mario Sunshine. The episode's objective is to reach the top of Hotel Delfino and go through a secret course.

Layout
The entrance to the secret course is in the hotel, so the player needs to talk to the Hotel Manager to be let in. Once inside, the player needs to spray the Pink Boos floating around the central pillar which will transform them into platforms Mario can jump on. By using the platforms, the player can reach the top floor of the hotel, where a large golden statue of a Boo can be found on top of the pillar. Jumping into the mouth of the Boo will transport Mario to the secret course, and Shadow Mario will appear to swipe F.L.U.D.D. away.

The first part of the secret course is comprised of several large Brick Blocks. In order to cross the large gaps ahead, Mario has to jump on the Soarin' Stus that move across and use them as platforms to reach the other side. Afterward is a tall wall covered in Brick Blocks. The player has to Wall Jump up the sides of the wall while breaking the blocks in order to move forward. After the wall are two paths made up of Sand Blocks; the player has to quickly cross one path of Sand Blocks before they disintegrate. Both paths will lead to a structure made up of various blocks, and Mario has to Ground Pound the second Watermelon Block in order to move forward (or Mario can fall off the opposite end and Ground Pound once he gets near the gear platform at the bottom). Once Mario stands on the gear-shaped platform, it will begin rotating while moving forward, and will lead to a pyramid of Sand Blocks. Behind the Sand Blocks is a platform with the Shine Sprite.

Red Coins in Boo's Big Mouth
Re-entering the secret course will allow Mario to use F.L.U.D.D. and do a Red Coin challenge. The Red Coin Switch is placed at the top of the tall wall the player has to Wall Jump up to. Ground Pounding the switch will cause eight Red Coins to appear in the course, and the player has to collect them all within a time limit of a minute and thirty seconds. Once all the Red Coins are collected, the Shine Sprite will appear at the end of the course, but failing to collect the Red Coins within the time limit will result in Mario losing a life. The locations of the Red Coins are:
 * Above the first set of Sand Blocks.
 * Two are along the Sand Block path on the left.
 * One is placed at the end of the block structure.
 * One is located under the Ice Blocks of the structure. Spraying the blocks with F.L.U.D.D. will make them evaporate.
 * The final three are located over the Sand Block pyramid.