Although the options weren't given, I'm going to safely assume the answer is :
The hostel breakfast was generous.
4_G la direccion
5_ D una carta
6_ J el buzon
7_ A las estampillas, los sellos
In fact the letters were not letters. They were roman numerals.Looks like the numbers are coordinates, Carolina. You are right. Maybe it's the coordinates to find the treasure. The girls decided to find the coordinates. They came to a long hallway and opened the door to the hallway. As they opened it, the Pirates had already arrived.
Espero haber ayudado!
Answer:
Las manzanas son dulces, la roja es menos pequeña que la verde. Ellas tienen distintas flores
