The Pokemon Mansion is an abandoned building on Cinnabar Island. You must investigate the mansion to find the key to the Cinnabar Pokemon Gym. If you read all the open books, you can also uncover the mystery of a mythical Pokemon.
Many rooms on the ground floor will be locked off from the start. Walk over to the far east side of the building to find a Max Lure beneath a table.
Next, walk to the room on the far northwest side of this floor. A Max Repel can be grabbed next to an unusual statue. Investigate this statue to discover a hidden switch. Push this switch to open a locked door to the east.
Enter this newly opened room to find a Max Elixir. With this floor clear, take the stairs to the next floor.
2nd and 3rd Floor room
Once you reach the second floor, immediately go up the next set up stairs to the east. A Pokemon Trainer can be found within this very small room on the third floor.
Defeat Simon to receive P3520 and 3 Poke Balls. Below this Trainer is a Rare Candy. Return to the previous floor using the same staircase from earlier.
Another statue with a secret switch is located near the staircase. Press the secret switch to change the doors. South of the staircase is a small room with another Pokemon Trainer. The Burglar will be standing near a Max Ether.
Defeat Arnie to receive P3520 and 3 Poke Balls. Walk all the way southeast to find 3 Ultra Balls near a dead end.
Another room can be found to the west. Inside the room is a PP Up. If the door is locked, you will need to press the hidden switch on the statue near the staircase to change the doors.
Next, head all the way to the northeast corner of the floor to find a Max Revive in a room. On the desk of this room is a journal documenting the discovery of a new Pokemon.
To the south of this room is another room with a destroyed floor. An Escape Rope can be found near the collapsed floor.
Return to the statue near the staircase and press the hidden switch once more. This will close two doors you should have entered while opening the room to the northwest. Enter this room to find a coach trainer.
Defeat Ted to receive P2,700. Further south is a Fire Stone. To the east is a warp pad that will take you back to the entrance of Pokemon Mansion, but don’t step on it just yet! Take the staircase down to the basement.
The area to the north will be closed off. Go into the small room to the west to find another statue with a hidden switch. You might run into a Pokemon Trainer on the way.
Defeat Lewis to receive P3,520 and 3 Poke Balls. Enter the small room to the south to learn more about the legendary and mythical Pokemon that were once held here. TM52 Sludge Bomb can be grabbed next to the strange statue with hidden switch. Press the switch on the statue to change up the doors on this floor.
Before going into the newly opened door to the northeast, walk to the far western wall and pick up a Max Potion.
Now you can enter the door on the far northeastern side of the basement. A set of beds can be found in a small room up ahead. Interact with these beds to heal your team. The room will be guarded by a scientist, however.
Defeat Ivan to receive P2,700. Investigate the small room to the west and pick up a Rare Candy. Return to the statue near the beds and press the hidden switch to unlock the last room to the west.
The room to the west is a secret laboratory of sorts – or once was. You can interact with some of the journals and the broken tank to get more info on a legendary and mythical Pokemon. Near the tank is a Max Elixir. To the south is the Secret Key that is needed to open up the Cinnabar Pokemon Gym!
Head to the Gym now and earn your seventh badge. If you have an escape rope, use it now. If you don’t, return to the previous floor and use the warp pad to transport out of the Mansion.