In the beginning of the location Party in Ibiza, you´ll need to help with the disconnected cable to lower the bridge.

Once you fix the cable, you´ll be able to leave the boat.
Once you actually get on the island, follow girls around and dig a few tiles.
The next puzzle is to guess the number, on which the police car parks.

You can find the solution here.
Once the puzzle in the parking lot is complete, you can proceed to the party.
When you reach the beach where the party´s at, you´ll need to get tickets from Jose in exchange for the golden trophy from the House of Horrors at the end of the street.

There are just a few puzzles in the House of Horrors. One of them is with the cart and spiders. Please push the arrow boulders as shown here.
And another spider puzzle ahead. The solution can be found here.
And there´s one more puzzle with the arrows and the cart. For the solution, click here.
Then, the final puzzle with cart, arrows and spiders. If you need help, check the solution here.
Follow the path and you´ll reach the room with the golden trophy.

Now you can exchange the trophy for the tickets. Don´t forget to take the tickets.
Finally, once you´re at the party, get the drinks so you and the girls can celebrate!

When you get the drinks, talk to Rosa and the quest here is complete!

Treasure part
The treasure part in this location can be found in the cat hotel. You´ll be able to get the treasure part once you solve all the riddles here.

In the first puzzle, please mark the column and row using the targets, where the cat is sitting turned the other way. For a solution, click here.
The solution for the second cat puzzle can be found here.
In the third cat puzzle, you need to find the barking cat. Click on each cat to see which one barks or check the solution here.
Once you reach the end, just drag the trunk away and you´ll be able to proceed to the treasure piece.

When you get back to the foyer of the hotel, you´ll be able to unlock the gate and claim the treasure part.
